PATINA OIL & GAS CORP
10-K405, 2000-02-25
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>

================================================================================

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                            ----------------------

                                   FORM 10-K
(Mark one)
[X]              ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                    OF THE SECURITIES EXCHANGE ACT OF 1934
                  For the fiscal year ended December 31, 1999

                                      OR
[ ]             TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                    OF THE SECURITIES EXCHANGE ACT OF 1934
              For the transaction period from________ to_________

                        Commission file number 1-14344

                          ---------------------------

                         PATINA OIL & GAS CORPORATION
            (Exact name of registrant as specified in its charter)

                Delaware                            75-2629477
     (State or other jurisdiction of              (IRS Employer
     incorporation or organization)             Identification No.)

             1625 Broadway                               80202
            Denver, Colorado                          (Zip Code)
 (Address of principal executive offices)

       Registrant's telephone number, including area code (303) 389-3600

<TABLE>
<S>                                                                       <C>
                   Title of each class                                    Name of each exchange on which registered
    --------------------------------------------------                    ------------------------------------------
              Common Stock, $.01 par value                                         New York Stock Exchange
     7.125% Convertible Preferred Stock, $.01 par value                            New York Stock Exchange
               Common Stock Warrants                                               New York Stock Exchange
</TABLE>

          Securities registered pursuant to Section 12(g) of the Act:
                                     None
                               (Title of Class)

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.
[X] Yes  [ ] No

     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [X]

     The aggregate market value of the 11,285,000 shares of voting stock held by
non-affiliates of the registrant, based upon the closing sale price of the
common stock on February 23, 2000 of $9.13 per share as reported on the New York
Stock Exchange, was $102,976,000. Shares of common stock held by each officer
and director and by each person who owns 5% or more of the outstanding common
stock have been excluded in that such persons may be deemed affiliates. This
determination of affiliate status is not necessarily a conclusive determination
for other purposes.

    As of February 17, 2000, the registrant had 16,285,770 shares of common
stock outstanding.

                      DOCUMENT INCORPORATED BY REFERENCE
     Part III of the report is incorporated by reference to the Registrant's
definitive Proxy Statement relating to its Annual Meeting of Stockholders, which
will be filed with the Commission no later than April 30, 2000.

================================================================================
<PAGE>

                         PATINA OIL & GAS CORPORATION

                          Annual Report on Form 10-K
                               December 31, 1999

                                    PART I

ITEM 1.  BUSINESS

General

     Patina Oil & Gas Corporation ("Patina" or the "Company") is an independent
energy company engaged in the acquisition, development, exploitation and
production of oil and natural gas in the Wattenberg Field ("Wattenberg" or the
"Field") of Colorado's Denver-Julesburg Basin ("D-J Basin"). The Company was
formed in 1996 to hold the Wattenberg assets of Snyder Oil Corporation ("SOCO")
and to facilitate the acquisition of Gerrity Oil & Gas Corporation ("Gerrity" or
the "Gerrity Acquisition"). In conjunction with the Gerrity Acquisition, SOCO
received 14.0 million of the Company's common shares. In 1997, a series of
transactions eliminated SOCO's ownership in the Company.

     Patina is one of the largest producers in Wattenberg and currently accounts
for over 30% of the total production from the Field. Wattenberg is one of the
ten largest natural gas fields in the U.S. with total cumulative production in
excess of three trillion cubic feet of natural gas equivalents since its
discovery in 1970. The Field is located approximately 35 miles northeast of
Denver and stretches over portions of Adams, Boulder and Weld Counties in
Colorado. One of the most attractive features of Wattenberg is that there are up
to eight potentially productive formations throughout the field ranging in
depths from 2,000 to 8,000 feet. Three of the formations, the Codell, the
Niobrara and the J-Sand, are "blanket" zones in the area of the Company's
holdings, while other formations, such as the Sussex, Shannon and Dakota are
more localized. The existence of several pay sands within the geological
structure allows for multiple completions within a single wellbore, reducing
drilling risks and operating costs.

     At December 31, 1999, the Company had $330.2 million of assets and 465.8
Bcfe of proved reserves. The reserves had an estimated pretax present value of
$457.5 million based on unescalated prices and costs in effect on that date.
Approximately 78% of the reserves on an Mcf equivalent basis were natural gas
and over 94% of the pretax present value was attributable to proved developed
reserves. The Company operates almost 97% of the roughly 3,400 producing wells
in which it holds a working interest, representing 99% of its producing reserve
value. At December 31, 1999, the Company had 153 proved undeveloped drilling or
deepening projects, 284 recompletions and 546 restimulation ("refrac")
opportunities included in total proved reserves. During 1999, production
averaged 107.9 MMcfe per day. Based on year-end 1999 reserves, the Company had a
reserve life index of 11.8 years.

     From its inception, the Company has focused on further consolidating the
ownership of its properties, developing an efficient organization, reducing
costs and improving operations. During 1999, revenues and net cash provided from
operations totaled $91.6 million and $49.7 million, respectively. The Company
used its operating cash flow to repurchase $24.7 million of its equity
securities and reduce indebtedness by $10.0 million. In addition, the Company
invested $24.0 million in the further development of its properties and the
acquisition of additional interests in Wattenberg. During the year, the
Company's development program was primarily comprised of drilling or deepening
36 development wells, performing 113 refracs and recompleting three wells. This
development activity, the benefits of certain minor acquisitions and continued
success with the production enhancement program allowed the Company to realize a
10% increase in production in 1999. Total proved reserves also increased 25%
over 1998 due to the identification of additional refrac projects and drilling
locations, upward revisions due to over-performance and the increase in oil and
gas prices.

     The Company's future Wattenberg activities will be primarily focused on the
development of J-Sand reserves through drilling new wells or deepening within
existing wellbores and refracing existing Codell wells. These projects and the
continued success with the production enhancement program should allow the
Company to realize production growth and increase total proved reserves in 2000.

                                       2
<PAGE>

Business Strategy

     Management believes that the Company's sizable asset base and cash flow,
along with its low production costs and efficient operating structure, provide
it with a competitive advantage in Wattenberg and in certain analogous basins.
Given management's expertise in operations and the advantages set forth above,
the Company believes it is in a good position to increase its reserves,
production and cash flows in a cost-efficient manner primarily through: (i)
further development and exploitation of its properties in Wattenberg through
development activity, well workovers and operational improvements; (ii) the
generation of grassroots drilling prospects with the potential to add
significant reserves and production, and (iii) selectively pursuing
consolidation and acquisition opportunities in existing and future core areas.
Consistent with prior years, the Company plans to repurchase its equity
securities from time to time, dependant upon market conditions. Management
believes that the Company's strong financial position affords it the financial
flexibility to execute its business strategy.

Production, Revenue and Price History

     The following table sets forth information regarding net oil and natural
gas production, revenues and direct operating expenses attributable to such
production, average sales prices and other production information for each of
the years in the five year period ended December 31, 1999. The financial and
operating information reflect the acquisition of Gerrity in May 1996.

<TABLE>
<CAPTION>
                                                                  December 31,
                                         --------------------------------------------------------------
                                            1995         1996         1997         1998         1999
                                         -----------  -----------  -----------  -----------  ----------
                                         (Dollars in thousands, except prices and per Mcfe information)
<S>                                      <C>          <C>          <C>          <C>          <C>
Production
   Oil (MBbl).............................     1,342        1,688        1,889        1,699       1,653
   Gas (MMcf).............................    20,981       23,947       26,863       25,522      29,477
   MMcfe (a)..............................    29,034       34,074       38,194       35,715      39,396

Revenues
   Oil....................................   $22,049      $34,541     $ 37,197      $22,583     $26,218
   Gas (b)................................    28,024       47,644       62,342       49,594      64,189
                                             -------      -------     --------      -------     -------
       Subtotal...........................    50,073       82,185       99,539       72,177      90,407
   Other..................................        29        1,003          794        2,533       1,164
                                             -------      -------     --------      -------     -------
      Total...............................    50,102       83,188      100,333       74,710      91,571
                                             -------      -------     --------      -------     -------

Direct operating expenses
   Lease operating expenses...............     5,387        8,866       11,735       12,399      11,902
   Production taxes.......................     3,480        5,653        7,055        4,941       6,271
                                             -------      -------     --------      -------     -------
      Total...............................     8,867       14,519       18,790       17,340      18,173
                                             -------      -------     --------      -------     -------

Direct operating margin...................   $41,235      $68,669     $ 81,543      $57,370     $73,398
                                             =======      =======     ========      =======     =======

Average sales price
   Oil (Bbl)..............................   $ 16.43      $ 20.47     $  19.70      $ 13.29     $ 15.86
   Gas (Mcf) (b)..........................      1.34         1.99         2.32         1.94        2.18
   Mcfe (a)...............................      1.73         2.41         2.61         2.02        2.29

Average direct operating expense/Mcfe.....      0.31         0.43         0.49         0.49        0.46
Average production margin/Mcfe............      1.42         1.99         2.12         1.54        1.83
</TABLE>

_________________________________
(a)  Oil production is converted to natural gas equivalents (Mcfe) at the rate
     of one barrel to six Mcf.
(b)  Sales of natural gas liquids are included in gas revenues.

                                       3
<PAGE>

Marketing

     The Company's oil and natural gas production is principally sold to end
users, marketers, refiners and other purchasers having access to natural gas
pipeline facilities near its properties and the ability to truck oil to local
refineries or oil pipelines. The marketing of oil and natural gas can be
affected by a number of factors that are beyond the Company's control and which
cannot be accurately predicted. The Company does not believe, however, that the
loss of any of its customers would have a long-term material adverse effect on
its operations.

     Natural Gas. Wattenberg natural gas is high in heating content (BTU's) and
must be processed in order to extract natural gas liquids ("NGL's") before the
residue gas is sold to utilities, independent marketers and end users through
both intrastate and interstate pipelines. The Company utilizes two separate
arrangements to gather, process and market its natural gas production.
Approximately 30% of the Company's natural gas production is sold to Duke Energy
Field Services ("Duke Energy") at the wellhead under percentage of proceeds
contracts. Pursuant to this type of contract, the Company receives a fixed
percentage of the proceeds from the sale of its residue gas and NGL's by Duke
Energy. Substantially all of the Company's remaining natural gas production is
dedicated for gathering to either Duke Energy or HS Gathering, LLC ("HSG") and
is processed at plants owned by Duke Energy or Amoco Production Company
("Amoco"). Under this arrangement, the Company retains the right to market its
share of residue gas at the tailgate of the plant and sells it under spot market
arrangements along the front range of Colorado or transports the gas to Midwest
markets under transportation agreements. NGL's are sold by the processor and the
Company receives payment net of applicable processing fees. A portion of the
natural gas processed by Amoco at the Wattenberg Processing Plant is under a
favorable "keepwhole" contract that not only provides payment for a percentage
of the NGL's stripped from the natural gas, but also redelivers to the tailgate
the same amount of MMBtu's as was delivered to the plant. This agreement remains
in effect until December 2012.

     Oil. Oil production is principally sold to refiners, marketers and other
purchasers who truck oil to local refineries or pipelines. The price is based on
a local market posting for oil, which generally approximates a West Texas
Intermediate posting, and is adjusted upward to reflect local demand and
quality. Amoco has the right to purchase oil produced from certain of the
Company's properties.

Competition

     The oil and natural gas industry is highly competitive. The Company
encounters competition from other oil and natural gas companies in all of its
operations, including the acquisition of exploration and development prospects
and producing properties. Patina competes for the acquisition of oil and natural
gas properties with numerous entities, including major oil companies, other
independent oil and natural gas concerns and individual producers and operators.
Many competitors have financial and other resources substantially greater than
those of the Company. The ability of the Company to increase reserves in the
future will be dependent on its ability to select and acquire suitable producing
properties and prospects for future development and exploration.

Title to Properties

     Title to the Company's oil and natural gas properties is subject to
royalty, overriding royalty, carried and other similar interests and contractual
arrangements customary in the oil and natural gas industry, to liens incident to
operating agreements and for current taxes not yet due and other comparatively
minor encumbrances. As is customary in the oil and natural gas industry, only a
perfunctory investigation as to ownership is conducted at the time undeveloped
properties are acquired. Prior to the commencement of drilling operations, a
detailed title examination is conducted and curative work is performed with
respect to identified title defects.

Regulation

     Regulation of Drilling and Production. The Company's operations are
affected by political developments and by federal, state and local laws and
regulations. Legislation and administrative regulations relating to the oil and
natural gas industry are periodically changed for a variety of political,
economic and other reasons. Numerous federal, state and local departments and
agencies issue rules and regulations binding on the oil and natural gas
industry, some of which carry substantial penalties for failure to comply. The
regulatory burden on the oil and gas industry increases the cost of doing
business, decreases flexibility in the timing of operations and may adversely
affect the economics of capital projects.

                                       4
<PAGE>

     In the past, the federal government has regulated the prices at which oil
and natural gas could be sold. Prices of oil and natural gas sold by the Company
are not currently regulated. In recent years, the Federal Energy Regulatory
Commission ("FERC") has taken significant steps to increase competition in the
sale, purchase, storage and transportation of natural gas. FERC's regulatory
programs allow more accurate and timely price signals from the consumer to the
producer and, on the whole, have helped natural gas become more responsive to
changing market conditions. To date, the Company believes it has not experienced
any material adverse effect as the result of these initiatives. Nonetheless,
increased competition in natural gas markets can and does add to price
volatility and inter-fuel competition, which increases the pressure on the
Company to manage its exposure to changing conditions and position itself to
take advantage of changing market forces.

     State statutes govern exploration and production operations, conservation
of oil and natural gas resources, protection of the correlative rights of oil
and natural gas owners and environmental standards. State Commissions implement
their authority by establishing rules and regulations requiring permits for
drilling, reclamation of production sites, plugging bonds, reports and other
matters. Colorado, where the Company's producing properties are located, amended
its statute concerning oil and natural gas development in 1994 to provide the
Colorado Oil & Gas Conservation Commission (the "COGCC") with enhanced authority
to regulate oil and natural gas activities to protect public health, safety and
welfare, including the environment. Several rule makings pursuant to these
statutory changes have been undertaken by the COGCC concerning groundwater
protection, soil conservation and site reclamation, setbacks in urban areas and
other safety concerns, and financial assurance for industry obligations in these
areas. To date, these rule changes have not adversely affected operations of the
Company, as the COGCC is required to enact cost-effective and technically
feasible regulations, and the Company has been an active participant in their
development. However, there can be no assurance that, in the aggregate, these
and other regulatory developments will not increase the cost of conducting
operations in the future.

     In Colorado, a number of city and county governments have enacted oil and
natural gas regulations. These ordinances increase the involvement of local
governments in the permitting of oil and natural gas operations, and require
additional restrictions or conditions on the conduct of operations so as to
reduce their impact on the surrounding community. Accordingly, these local
ordinances have the potential to delay and increase the cost of drilling,
refracing and recompletion operations.

     Environmental Regulation. Operations of the Company are subject to numerous
laws and regulations governing the discharge of materials into the environment
or otherwise relating to environmental protection. The Company currently owns or
leases numerous properties that have been used for many years for natural gas
and oil production. Although the Company believes that it and previous owners
have utilized operating and disposal practices that were standard in the
industry at the time, hydrocarbons or other wastes may have been disposed of or
released on or under the properties owned or leased by the Company. In
connection with its most significant acquisitions, the Company has performed
environmental assessments and found no material environmental noncompliance or
clean-up liabilities requiring action in the near or intermediate future. Such
environmental assessments have not, however, been performed on all of the
Company's properties.

     The Company operates its own exploration and production waste management
facilities, which enable it to treat, bioremediate and otherwise dispose of tank
sludges and contaminated soil generated from the Company's operations. There can
be no assurance, that these facilities, or other commercial disposal facilities
utilized by the Company from time to time, will not give rise to environmental
liability in the future. To date, expenditures for the Company's environmental
control facilities and for remediation of production sites have not been
significant. The Company believes, however, that the trend toward stricter
standards in environmental legislation and regulations will continue and could
have a significant adverse impact on the Company's operating costs and the oil
and gas industry in general.

Office and Operations Facilities

     The Company, a Delaware corporation, leases its principal executive offices
at 1625 Broadway, Denver, Colorado 80202. The lease covers approximately 29,000
square feet and expires in November 2001. The monthly rent is approximately
$43,000. The Company also owns a 6,000 square foot production facility in
Platteville, Colorado used to support its Wattenberg Field operations.

                                       5
<PAGE>

Employees

     On December 31, 1999, the Company had 153 employees, including 91 that work
in its field office. None of these employees are represented by a labor union.
The Company believes its relationship with its employees is satisfactory.

Directors and Executive Officers

     The following table sets forth certain information about the officers and
directors of the Company:

<TABLE>
<CAPTION>

                   Name                Age                      Position
                   ----                ---                      --------
          <S>                          <C>          <C>
          Thomas J. Edelman...........   49         Chairman of the Board and Chief Executive Officer
          Jay W. Decker...............   47         President and Director
          David J. Kornder............   39         Vice President and Chief Financial Officer
          James A. Lillo..............   45         Vice President
          Terry L. Ruby...............   41         Vice President
          David W. Siple..............   40         Vice President
          Christopher C. Behrens......   39         Director
          Robert J. Clark.............   55         Director
          Thomas R. Denison...........   39         Director
          Elizabeth K. Lanier.........   48         Director
          Alexander P. Lynch..........   47         Director
</TABLE>

- --------------------

     Thomas J. Edelman has served as Chairman of the Board and Chief Executive
Officer of the Company since its formation. He co-founded SOCO and was its
President from 1981 through early 1997. From 1980 to 1981, he was with The First
Boston Corporation and from 1975 through 1980, with Lehman Brothers Kuhn Loeb
Incorporated. Mr. Edelman received his Bachelor of Arts Degree from Princeton
University and his Masters Degree in Finance from Harvard University's Graduate
School of Business Administration. Mr. Edelman serves as Chairman of Range
Resources Corporation and Bear Paw Energy LLC, and is a Director of Star Gas
Corporation and Paradise Music & Entertainment, Inc.

     Jay W. Decker has served as President of the Company since March 1998 and
as a Director since May 1996. He had been the Executive Vice President and a
Director of Hugoton Energy Corporation, a public independent oil company since
1995. From 1989 until its merger into Hugoton Energy, Mr. Decker was the
President and Chief Executive Officer of Consolidated Oil & Gas, Inc., a private
independent oil company and President of a predecessor company. Prior to 1989,
Mr. Decker served as Vice President - Operations for General Atlantic Energy
Company and in various capacities with Peppermill Oil Company, Wainoco Oil & Gas
and Shell Oil Company. Mr. Decker received his Bachelor of Science Degree in
Petroleum Engineering from the University of Wyoming. Mr. Decker also serves as
a Director of FX Energy.

     David J. Kornder has served as Vice President and Chief Financial Officer
of the Company since May 1996. Prior to that time, he served as Vice President -
Finance of Gerrity beginning in early 1993. From 1989 through 1992, Mr. Kornder
was an Assistant Vice President of Gillett Group Management, Inc. Prior to that,
Mr. Kornder was an accountant with the independent accounting firm of Deloitte &
Touche for five years. Mr. Kornder received his Bachelor of Arts Degree in
Accounting from Montana State University.

     James A. Lillo has served as a Vice President of the Company since May
1998. From 1995 to 1998, Mr. Lillo was President of James Engineering, Inc., an
independent petroleum engineering consulting firm. Previously, he served as Vice
President of Engineering for Consolidated Oil & Gas, Inc., until its merger into
Hugoton Energy Corporation, and President of a predecessor operating company
since 1989. Prior to 1989, Mr. Lillo worked as an engineering consultant and as
Manager of Reservoir Engineering for Hart Exploration and in various engineering
capacities with Champlin Petroleum Company and Shell Oil Company. Mr. Lillo
received his Bachelor of Science Degree in Chemical and Petroleum Refining
Engineering from the Colorado School of Mines and is a Registered Professional
Engineer.

                                       6
<PAGE>

     Terry L. Ruby has served as a Vice President of the Company since May 1996.
Prior to that time, Mr. Ruby served as a senior landman of Gerrity beginning in
1992 and was appointed Vice President - Land in 1995. From 1990 to 1992, Mr.
Ruby worked for Apache Corporation and from 1982 to 1990, he was employed by
Baker Exploration Company. Mr. Ruby received his Bachelor of Science Degree in
Minerals Land Management from the University of Colorado and his M.B.A. from the
University of Denver.

     David W. Siple has served as a Vice President of the Company since May
1996. He joined SOCO's land department in 1994 and was appointed a Land Manager
in 1995. From 1990 through May 1994, Mr. Siple was the Land Manager of Gerrity.
From 1981 through 1989, Mr. Siple was employed by PanCanadian Petroleum Company
in the Land Department. Mr. Siple received his Bachelor of Science Degree in
Minerals Land Management from the University of Colorado.

     Christopher C. Behrens has served as a Director of the Company since
February 1999. Mr. Behrens was been a general partner at Chase Capital Partners
since 1999 and a principal since 1994. Chase Capital Partners is a General
Partner of Chase Venture Capital Associates, L.P. Prior to assuming that
position, Mr. Behrens was a Vice President in the Chase Manhattan Corporation's
Merchant Banking Group. He received his Bachelor of Arts from the University of
California at Berkeley and his M.B.A. from Columbia University. Mr. Behrens also
serves as a Director of Portola Packaging, Carrizo Oil and Gas, Domino's Pizza,
PDI, as well as other private companies, including Bear Paw Energy LLC.

     Robert J. Clark has served as a Director of the Company since May 1996. Mr.
Clark is the President of Bear Paw Energy LLC, a private gas gathering and
processing company, formerly a wholly owned subsidiary of TransMontaigne, Inc.
Mr. Clark formed a predecessor company Bear Paw Energy Inc. in 1995 and joined
TransMontaigne in 1996 when TransMontaigne acquired a majority interest in the
predecessor company. From 1988 to 1995 he was President of SOCO Gas Systems,
Inc. and Vice President - Gas Management for SOCO. Mr. Clark was Vice President
Gas Gathering, Processing and Marketing of Ladd Petroleum Corporation, an
affiliate of General Electric from 1985 to 1988. Prior to 1985, Mr. Clark held
various management positions with NICOR, Inc. and its affiliate NICOR
Exploration, Northern Illinois Gas and Reliance Pipeline Company. Mr. Clark
received his Bachelor of Science Degree from Bradley University and his M.B.A.
from Northern Illinois University.

     Thomas R. Denison has served as a Director of the Company since January
1998. Mr. Denison has been a Managing Director and General Counsel of First
Reserve Corporation since January 1998. Prior to joining First Reserve, he was a
partner in the international law firm of Gibson, Dunn & Crutcher LLP, a firm he
joined in 1986 as an associate. Mr. Denison received his Bachelor of Science
degree in Business Administration from the University of Denver and his Juris
Doctor from the University of Virginia. Mr. Denison also serves as a Director of
Anker Coal Group, Inc.

     Elizabeth K. Lanier has served as a Director of the Company since January
1998. Mrs. Lanier has served as Vice President and General Counsel of General
Electric Power Systems since August 1998. From 1996 to 1998, Mrs. Lanier served
as Vice President and Chief of Staff of Cinergy Corp. Mrs. Lanier received her
Bachelor of Arts Degree with honors from Smith College and her Juris Doctor from
Columbia Law School where she was a Harlan Fiske Stone Scholar. Mrs. Lanier was
awarded an Honorary Doctorate of Technical Letters by Cincinnati Technical
College and an Honorary Doctorate of Letters from the College of Mt. St. Joseph.
From 1982 to 1984 she was an associate with Frost & Jacobs, a law firm in
Cincinnati, Ohio and a partner from 1984 to 1996. From 1977 to 1982 she was with
the law firm of Davis Polk & Wardwell in New York City. She is immediate past
Chair of the Ohio Board of Regents.

     Alexander P. Lynch has served as a Director of the Company since May 1996.
Mr. Lynch has been a General Partner of The Beacon Group, a private investment
and financial advisory firm since 1997. From 1995 to 1996, Mr. Lynch was
Co-President and Co-Chief Executive Officer of The Bridgeford Group, a financial
advisory firm. From 1991 to 1994, he served as Senior Managing Director of
Bridgeford. From 1985 until 1991, Mr. Lynch was a Managing Director of Lehman
Brothers, a division of Shearson Lehman Brothers Inc. Mr. Lynch received his
Bachelor of Arts Degree from the University of Pennsylvania and his M.B.A. from
the Wharton School of Business at the University of Pennsylvania. Mr. Lynch also
serves as a Director of Canadian National Railway Company.

                                       7
<PAGE>

ITEM 2. PROPERTIES

General

     The Company's reserves are concentrated in the Wattenberg Field within the
D-J Basin of north central Colorado. Discovered in 1970, the Field is located
approximately 35 miles northeast of Denver and stretches over portions of Adams,
Boulder and Weld counties in Colorado. One of the most attractive features of
Wattenberg is the presence of several productive formations. In a section only
4,500 feet thick, there are up to eight potentially productive formations. Three
of the formations, the Codell, Niobrara and J-Sand, are considered "blanket"
zones in the area of the Company's holdings, while others, such as the D-Sand,
Dakota and the shallower Shannon, Sussex and Parkman, are more localized.

     Drilling in Wattenberg is considered low risk from the perspective of
finding oil and gas reserves, with better than 95% of the wells drilled being
completed as producers. In May 1998, the Colorado Oil & Gas Commission adopted
new spacing rules for the Wattenberg Field that greatly enhanced the Company's
ability to more efficiently develop its properties. The rule also eliminated
costly and time-consuming procedures required for certain development
activities. All formations in the Field can now be drilled, produced and
commingled from any or all of ten "drilling windows" on a 320 acre parcel.

     The Company's current Wattenberg activities are primarily focused on the
development of J-Sand reserves through drilling new wells or deepening within
existing wellbores and refracing existing Codell wells. A refrac consists of the
restimulation of a producing formation within an existing wellbore to enhance
production and add new incremental reserves. These projects and the benefits of
certain minor acquisitions and continued success with the production enhancement
program allowed the Company to realize production growth during 1999 and
increase its total proved reserves.

     During 1999, the Company drilled or deepened 36 wells to the J-Sand or
Dakota formation. The cost of drilling and completing a J-Sand well approximates
$315,000 while a completed deepening within an existing wellbore costs roughly
$225,000. The reserves associated with a typical J-Sand well are more prolific
than those of a Codell/Niobrara, with over 95% of such per well reserves
comprised of natural gas. Thus, the economics associated with a J-Sand project
are more dependent on natural gas prices. The finding and development costs for
the J-Sand and Dakota drilling and deepening projects for 1999 averaged $0.44
per Mcfe with projected rates of return in excess of 75% at current commodity
prices. At December 31, 1999, the Company had 135 proven J-Sand drilling
locations or deepening projects in inventory.

     The Company also performed 113 Codell refracs during 1999. The refrac
program continues to be focused primarily on the Codell formation. A typical
refrac costs approximately $103,000. The finding and development costs
associated with the Company's 1999 refrac program averaged $0.57 per Mcfe with
projected rates of return in excess of 100% at current commodity prices. At
December 31, 1999, the Company had 546 proven refrac projects. Given the
exceptional results of the 1999 refrac program, the 2000 budget activity has
been increased to over 180 refrac projects.

     In addition to the development activity described above, the Company
recompleted three wells. The Company has an additional 284 proven recompletion
opportunities at December 31, 1999. During 1999, tubing was installed in another
37 wellbores and numerous well workovers, reactivations, and commingling of
zones were performed. These projects, combined with the new drills, deepenings
and refracs, were an integral part of the Company's 1999 capital development
program and continued increases in the Company's production. The Company
estimates it had over 500 of these minor projects at year-end 1999.

     At December 31, 1999, the Company had working interests in approximately
3,400 gross (3,200 net) producing oil and natural gas wells in the D-J Basin and
held royalty interests in an additional 176 producing wells. As of December 31,
1999 estimated proved reserves totaled 465.8 Bcfe, including 17.4 million
barrels of oil and 361.3 Bcf of gas.

                                       8
<PAGE>

Proved Reserves

     The following table sets forth estimated year-end net proved reserves for
the three years ended December 31, 1999.

<TABLE>
<CAPTION>
                                                                                                             December 31,
                                                                                                      -------------------------
                                                                                                       1997     1998     1999
                                                                                                      -------  -------  -------
         <S>                                                                                          <C>      <C>      <C>
         Oil (MBbl)
              Developed.............................................................................   14,594   13,655   16,633
              Undeveloped...........................................................................    2,382      585      787
                                                                                                      -------  -------  -------
                   Total............................................................................   16,976   14,240   17,420
                                                                                                      =======  =======  =======

         Natural gas (MMcf)
              Developed.............................................................................  232,058  244,736  307,560
              Undeveloped...........................................................................   23,577   41,859   53,701
                                                                                                      -------  -------  -------
                   Total............................................................................  255,635  286,595  361,261
                                                                                                      =======  =======  =======

         Total MMcfe................................................................................  357,491  372,035  465,781
                                                                                                      =======  =======  =======
 </TABLE>

     The following table sets forth the estimated pretax future net revenues
from the production of proved reserves and the pretax present value discounted
at 10% of such revenues, net of estimated future capital costs, including
estimated development costs of $33.5 million in 2000.



                                            December 31, 1999
                                    -----------------------------
                                    Developed  Undeveloped  Total
                                    ---------  -----------  -----
                                             (In thousands)

         Future Net Revenues
         -------------------
         2000.....................   $ 78,757   $(5,846)  $ 72,911
         2001.....................     71,393    (2,001)    69,392
         2002.....................     66,458       902     67,360
         Remainder................    528,026    85,065    613,091
                                     --------   -------   --------
            Total.................   $744,634   $78,120   $822,754
                                     ========   =======   ========

         Pretax PW 10% Value (a)..   $430,037   $27,505   $457,542
                                     ========   =======   ========
- ------------------

(a) The after tax present value discounted at 10% of the proved reserves totaled
$362.5 million at year-end 1999.


                                       9
<PAGE>

     The quantities and values in the preceding tables are based on prices in
effect at December 31, 1999, which averaged $24.27 per barrel of oil and $2.34
per Mcf of gas. Price declines decrease reserve values by lowering the future
net revenues attributable to the reserves and reducing the quantities of
reserves that are recoverable on an economic basis. Price increases have the
opposite effect. A significant decline in the prices of oil or natural gas could
have a material adverse effect on the Company's financial condition and results
of operations.

     Proved developed reserves are proved reserves that are expected to be
recovered from existing wells with existing equipment and operating methods
under current economic conditions. Proved undeveloped reserves are proved
reserves that are expected to be recovered from new wells drilled to known
reservoirs on undrilled acreage for which the existence and recoverability of
such reserves can be estimated with reasonable certainty, or from existing wells
where a relatively major expenditure is required to establish production.

     Future prices received from production and future production costs may
vary, perhaps significantly, from the prices and costs assumed for purposes of
these estimates. There can be no assurance that the proved reserves will be
developed within the periods indicated or that prices and costs will remain
constant. There can be no assurance that actual production will equal the
estimated amounts used in the preparation of reserve projections.

     The present values shown should not be construed as the current market
value of the reserves. The quantities and values shown in the preceding tables
are based on average oil and natural gas prices in effect on December 31, 1999.
The value of the Company's assets is in part dependent on the prices the Company
receives for oil and natural gas, and a significant decline in the price of oil
or gas could have a material adverse effect on the Company's financial condition
and results of operations. The 10% discount factor used to calculate present
value, which is specified by the Securities and Exchange Commission (the "SEC"),
is not necessarily the most appropriate discount rate, and present value, no
matter what discount rate is used, is materially affected by assumptions as to
timing of future production, which may prove to be inaccurate. For properties
operated by the Company, expenses exclude Patina's share of overhead charges. In
addition, the calculation of estimated future net revenues does not take into
account the effect of various cash outlays, including, among other things
general and administrative costs and interest expense.

     There are numerous uncertainties inherent in estimating quantities of
proved reserves and in projecting future rates of production and timing of
development expenditures. The data in the above tables represent estimates only.
Oil and natural gas reserve engineering must be recognized as a subjective
process of estimating underground accumulations of oil and natural gas that
cannot be measured in an exact way, and estimates of other engineers might
differ materially from those shown above. The accuracy of any reserve estimate
is a function of the quality of available data and engineering and geological
interpretation and judgment. Results of drilling, testing and production after
the date of the estimate may justify revisions. Accordingly, reserve estimates
are often materially different from the quantities of oil and natural gas that
are ultimately recovered.

     The proved oil and natural gas reserves and future revenues as of December
31, 1999 were audited by Netherland, Sewell & Associates, Inc. ("NSAI"). Since
January 1, 2000, the Company has filed Department of Energy Form EIA-23, "Annual
Survey of Oil and Gas Reserves," as required by operators of domestic oil and
gas properties. There are differences between the reserves as reported on Form
EIA-23 and reserves as reported herein. Form EIA-23 requires that operator's
report on total proved developed reserves for operated wells only and that the
reserves be reported on a gross operated basis rather than on a net interest
basis.

                                       10
<PAGE>

Producing Wells

     The following table sets forth the producing wells in which the Company
owned a working interest at December 31, 1999. The Company also held royalty
interests in 176 producing wells at such date. The Company had 154 wells (148
net) shut in at December 31, 1999. The Company's average working interest in all
wells was 95%. Wells are classified as oil or natural gas wells according to
their predominant production stream.

             Principal                                  Gross       Net
             Production Stream                          Wells      Wells
             -----------------                          -----      -----

    Oil...............................................  2,983      2,835
    Natural gas.......................................    396        361
                                                        -----      -----
           Total......................................  3,379      3,196
                                                        =====      =====

Drilling Results

     The following table sets forth the number of wells drilled or deepened by
the Company during the past three years. All the wells were development wells.
The information should not be considered indicative of future performance, nor
should it be assumed that there is necessarily any correlation between the
number of productive wells drilled, quantities of reserves found or economic
value. Productive wells are those that produce commercial quantities of
hydrocarbons whether or not they produce a reasonable rate of return.


                                              1997       1998       1999
                                              ----       ----       ----
        Productive
            Gross........................     28.0       36.0       36.0
            Net..........................     28.0       36.0       35.0
        Dry
            Gross........................      1.0        0.0        0.0
            Net..........................      1.0        0.0        0.0


  At December 31, 1999 no development wells were in progress.

Acreage

     The following table sets forth the leasehold acreage held by the Company at
December 31, 1999. Undeveloped acreage is acreage held under lease, permit,
contract or option that is not in a spacing unit for a producing well, including
leasehold interests identified for development or exploratory drilling.
Developed acreage is acreage assigned to producing wells.


                                 Developed              Undeveloped
                                 ---------              -----------
                               Gross     Net          Gross      Net
                               -----     ---          -----      ---

     Colorado.............   188,000    177,000       54,000    48,000
                             =======    =======       ======    ======


In late 1999, the Company sold its undeveloped Wyoming acreage.

                                       11
<PAGE>

ITEM 3.  LEGAL PROCEEDINGS


     The Company is a party to various lawsuits incidental to its business, none
of which are anticipated to have a material adverse impact on its financial
position or results of operations.


ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

       None.


                                    PART II

ITEM 5.  MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED SECURITY HOLDER
         MATTERS

     The Company's Common Stock, $12.50 Warrants and 7.125% Preferred Stock are
listed on the New York Stock Exchange ("NYSE") under the symbols "POG", "POGWT"
and "POGPr", respectively. Such listings became effective in May 1996. The
Company's 8.50% Preferred Stock was privately placed and does not trade
publicly. The following table sets forth the range of high and low closing
prices as reported on the NYSE Composite Tape.


                             Common Stock      Warrants     Preferred Stock
                             ------------      --------     ---------------
                             High     Low     High    Low     High      Low
                             ----     ---     ----    ---     ----      ---

  1998
  ----
     First Quarter.........  $7.75  $6.69    $1.63  $1.13    $29.50   $27.00
     Second Quarter........   7.81   6.50     1.56   1.13     29.56    25.94
     Third Quarter.........   7.13   3.56     1.25   0.38     26.75    20.06
     Fourth Quarter........   4.56   2.38     0.63   0.22     21.50    17.19

  1999
  ----
     First Quarter.........  $4.19  $2.75    $0.41  $0.25    $19.25   $15.50
     Second Quarter........   6.31   3.88     0.75   0.31     23.25    19.00
     Third Quarter.........   9.13   6.43     1.50   0.69     28.25    23.25
     Fourth Quarter........   9.13   7.13     1.25   0.44     27.13    25.25


     On February 23, 2000, the closing prices of the Common Stock and Warrants
were $9.13 and $1.19, respectively. All remaining shares of the 7.125% Preferred
Stock were redeemed in January 2000. As of December 31, 1999, there were
approximately 166 holders of record of the common stock and 16.1 million shares
outstanding.

     Dividend Policy. A quarterly cash dividend of $0.01 per common share was
initiated in December 1997 and was continued through the third quarter of 1999.
The common dividend was increased to $0.02 per common share in the fourth
quarter of 1999. The Company currently expects to continue to pay dividends on
its common stock. However, continuation of dividends and the amounts thereof
will depend upon the Company's earnings, financial condition, capital
requirements and other factors. Under the terms of its bank Credit Agreement,
the Company had $1.1 million available for dividends on its common stock as of
December 31, 1999. This amount was reset at $10.0 million at January 1, 2000.

                                       12
<PAGE>

ITEM 6. SELECTED FINANCIAL DATA

     The following table presents selected historical financial data of the
Company as of or for each of the years in the five-year period ended December
31, 1999. Future results may differ substantially from historical results
because of changes in oil and natural gas prices, production increases or
declines and other factors. This information should be read in conjunction with
the financial statements and notes thereto and Management's Discussion and
Analysis of Financial Condition and Results of Operations, presented elsewhere
herein. The financial data reflects the acquisition of Gerrity in May 1996.

<TABLE>
<CAPTION>
                                                                   As of or for the Year Ended December 31,
                                                             -----------------------------------------------------
                                                               1995       1996       1997       1998       1999
                                                             ---------  ---------  ---------  ---------  ---------
                                                                     (In thousands except per share data)
<S>                                                          <C>        <C>        <C>        <C>        <C>

 Statement of Operations Data
 Revenues................................................    $ 50,102   $ 83,188   $100,333   $ 74,710   $ 91,571
 Expenses
   Direct operating......................................       8,867     14,519     18,790     17,340     18,173
   Exploration...........................................         416        224        131         59        666
   General and administrative............................       5,974      6,151      7,154      7,139      6,185
   Interest and other....................................       5,476     14,304     16,038     13,001     10,844
   Depletion, depreciation and amortization..............      32,591     44,822     49,076     41,695     40,744
   Impairment of oil and gas properties..................           -          -     26,047          -          -
                                                             --------   --------   --------   --------   --------
    Total expenses.......................................      53,324     80,020    117,236     79,234     76,612
                                                             --------   --------   --------   --------   --------
 Income (loss) before taxes..............................      (3,222)     3,168    (16,903)    (4,524)    14,959
 Provision (benefit) for income taxes...................       (1,128)      (394)         -          -          -
                                                             --------   --------   --------   --------   --------
 Net income (loss).......................................    $ (2,094)  $  3,562   $(16,903)  $ (4,524)  $ 14,959
                                                             ========   ========   ========   ========   ========

 Basic net income (loss) per common share................    $  (0.15)  $   0.08   $  (1.11)  $  (0.68)  $   0.52
                                                             ========   ========   ========   ========   ========
 Diluted net income (loss) per common share..............    $  (0.15)  $   0.08   $  (1.11)  $  (0.68)  $   0.50
                                                             ========   ========   ========   ========   ========

 Basic weighted average shares outstanding...............      14,000     17,796     18,324     16,025     15,972
 Diluted weighted average shares outstanding.............      14,000     17,796     18,324     16,025     16,471

 Cash dividends per common share.........................    $   0.00   $   0.00   $   0.01   $   0.04   $   0.05

 Balance Sheet Data
    Current assets.......................................    $  9,611   $ 27,587   $ 31,068   $ 23,325   $ 19,350
    Oil and gas properties, net..........................     214,594    398,640    342,833    324,777    308,035
    Total assets.........................................     224,521    430,233    376,875    351,533    330,216
    Current liabilities..................................       9,611     26,572     30,297     23,579     19,108
    Debt.................................................      75,000    197,594    146,435    142,021    132,000
    Stockholders' equity.................................     113,663    196,236    188,441    175,976    165,890

 Cash Flow Data
    Net cash provided by operations......................    $ 18,407   $ 52,996   $ 68,645   $ 34,331   $ 49,660
    Net cash used by investing...........................     (21,060)    (9,796)   (18,801)   (23,145)   (23,669)
    Net cash realized (used) by financing................       2,653    (38,047)   (43,388)   (13,709)   (35,451)
</TABLE>

                                       13
<PAGE>

     The following table sets forth unaudited summary financial results on a
quarterly basis for the two most recent years.

<TABLE>
<CAPTION>
                                                                                       1998
                                                                      --------------------------------------
                                                                       First     Second    Third     Fourth
                                                                      --------  --------  --------  --------
<S>                                                                   <C>       <C>       <C>       <C>
(In thousands, except per share data)

Revenues...........................................................   $ 20,637  $ 18,327  $ 18,490  $ 17,256
Direct operating expenses..........................................      4,637     4,258     4,198     4,247
Depletion, depreciation and amortization...........................     10,538    10,222    10,665    10,270
Net income (loss)..................................................        304    (1,501)   (1,464)   (1,863)
Basic and diluted income (loss) per common share...................      (0.08)    (0.19)    (0.19)    (0.22)
</TABLE>

<TABLE>
<CAPTION>
                                                                                       1999
                                                                      --------------------------------------
                                                                       First     Second    Third     Fourth
                                                                      --------  --------  --------  --------
<S>                                                                   <C>       <C>       <C>       <C>
(In thousands, except per share data)

Revenues...........................................................   $ 16,656  $ 20,447  $ 24,476  $ 29,992
Direct operating expenses..........................................      4,122     4,454     4,762     4,835
Depletion, depreciation and amortization...........................     10,273     9,813    10,292    10,366
Net income (loss)..................................................     (2,018)    1,742     5,280     9,955
Basic net income (loss) per common share...........................      (0.23)     0.01      0.23      0.50
Diluted net income (loss) per common share.........................      (0.23)     0.01      0.21      0.41
</TABLE>

                                       14
<PAGE>

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS

Results of Operations

     Comparison of 1999 results to 1998.  Revenues for 1999 totaled $91.6
million, a 23% increase over 1998. The increase was due primarily to increases
in production and higher oil and gas prices.  Net income for 1999 totaled $15.0
million compared to a net loss of $4.5 million in 1998. The increase was
attributed to higher production, cost efficiencies and recovering oil and gas
prices.

     Average daily oil and gas production for 1999 totaled 4,529 barrels and
80.8 MMcf (107.9 MMcfe), an increase of 10% on an equivalent basis from 1998.
During 1999, 36 wells were drilled or deepened and 116 refracs and recompletions
were performed, compared to 36 new wells or deepenings and 75 refracs and
recompletions in 1998. The Company's current development activity, the benefits
of certain minor acquisitions and continued success with the production
enhancement program has resulted in increasing production for six successive
quarters. Based upon a $35.0 million capital budget for 2000, the Company
expects production to continue to increase in the coming year. The decision to
increase development activity is heavily dependent on the prices being received
for production.

     Average oil prices increased 19% from $13.29 per barrel in 1998 to $15.86
in 1999. Average natural gas prices increased 12% from $1.94 per Mcf for 1998 to
$2.18 in 1999. The average oil prices include hedging gains of $285,000 or $0.17
per barrel in 1998 and hedging losses of $3.1 million or $1.85 per barrel in
1999. The average natural gas prices include hedging gains of $1.7 million or
$0.06 per Mcf in 1998 and hedging losses of $1.0 million or $0.03 per Mcf in
1999. Direct operating expenses, consisting of lease operating and production
taxes, totaled $18.2 million or $0.46 per Mcfe for 1999 compared to $17.3
million or $0.49 per Mcfe in the prior year period. The increase in direct
operating expenses in 1999 was attributed to a $1.3 million rise in production
taxes as a result of higher average oil and gas prices and production offset by
a decrease in lease operating expenses of $497,000.

     General and administrative expenses, net of third party reimbursements, for
1999 totaled $6.2 million, a $954,000 or 13% decrease from 1998. The reduction
in general and administrative expense was due to the Company's cost reduction
program implemented in late 1998. Included in general and administrative
expenses is $1.0 million and $1.5 million for 1999 and 1998 of non-cash expenses
related to the common stock grants awarded to officers and managers of the
Company in conjunction with the redistribution of SOCO's ownership of the
Company in 1997.

     Interest and other expenses fell to $10.8 million in 1999, a decrease of
$2.2 million or 17% from the prior year. Interest expense decreased as a result
of lower average debt balances and lower interest rates on the Company's debt
due to the redemption of the 11.75% Subordinated Notes on July 15, 1999. The
redemption was financed with borrowings under the bank credit facility. The
Company's average interest rate for 1999 was 8.1% compared to 10.0% in 1998.

     Depletion, depreciation and amortization expense for 1999 totaled $40.7
million, a decrease of $951,000 or 2% from 1998. Depletion expense totaled $39.8
million or $1.01 per Mcfe for 1999 compared to $40.9 million or $1.14 per Mcfe
for 1998. The decrease in depletion expense resulted primarily from a lower
depletion rate, partially offset by higher oil and gas production. The depletion
rate was lowered in the second and fourth quarters of 1999 in conjunction with
the completion of the mid-year and year-end reserve reports reflecting
additional oil and gas reserves due primarily to the identification of
additional refrac projects and drilling locations, upward revisions due to over-
performance and the increase in oil and gas prices. Depreciation and
amortization expense for 1999 totaled $947,000 or $0.02 per Mcfe compared to
$807,000 or $0.02 per Mcfe for 1998.

     Comparison of 1998 results to 1997. Revenues for 1998 totaled $74.7
million, a 26% decrease from the prior year. The decrease was due primarily to a
sharp decline in oil and gas prices and, to a lesser extent, lower production.
The net loss in 1998 was $4.5 million compared to net loss of $16.9 million in
1997. The net loss in 1997 was primarily attributed to a $26.0 million
impairment of oil and gas properties recorded in the fourth quarter of 1997.
Exclusive of the non-cash impairment, the Company would have reported $9.1
million of net income in 1997. No impairment of oil and gas properties was
recorded in 1998.

                                       15
<PAGE>

     Average daily oil and gas production for 1998 totaled 4,654 barrels and
69.9 MMcf (97.8 MMcfe), decreases of 10% and 5%, respectively, from 1997. During
1998, 36 wells and 75 recompletions and refracs were placed on production,
compared to 28 wells and 102 recompletions and refracs in 1997.

     Average oil prices decreased from $19.70 per barrel in 1997 to $13.29 in
1998. Average natural gas prices decreased from $2.32 per Mcf in 1997 to $1.94
in 1998. The average oil price includes hedging gains in 1997 and 1998 of
$297,000 or $0.16 per barrel and $285,000 or $0.17 per barrel. The decrease in
natural gas prices was primarily the result of the decrease in the average CIG
and PEPL indexes for 1998 compared to 1997 and lower natural gas liquids prices
in 1998. The average natural gas price for 1997 and 1998 included hedging gains
of $2.0 million or $0.07 per Mcf and $1.7 million or $0.06 per Mcf. Direct
operating expenses totaled $17.3 million or $0.49 per Mcfe in 1998 compared to
$18.8 million or $0.49 per Mcfe in the prior year. The decrease in operating
expenses was primarily attributed to the decrease in production taxes as a
result of lower average product prices somewhat offset by increases in well
workovers and more effective production methods.

     General and administrative expenses, net of third party reimbursements, for
1998 and 1997 totaled $7.1 million and $7.2 million, respectively. Included in
general and administrative expense is $1.5 million and $2.0 million in 1998 and
1997 of non-cash expenses related to the common stock grants awarded to officers
and managers of the Company in conjunction with the redistribution of SOCO's
ownership of the Company in 1997. In the fourth quarter of 1998, the Company
instituted a cost reduction program in response to the sharp decline in oil and
gas prices. This plan resulted in the elimination of nine positions, or 15% of
the Company's office staff, and the institution of additional cost cutting
measures. The Company incurred approximately $500,000 of charges related to this
restructuring.

     Interest and other expenses totaled $13.0 million in 1998, a decrease of
$3.0 million or 19% from the prior year. Interest expense decreased as a result
of lower average debt levels and the repurchase of over $22.0 million of face
amount of 11.75% Subordinated Notes, through borrowings under the bank credit
facility. The Company's average interest rate for 1998 was 10.0% compared to
9.6% in 1997.

     Depletion, depreciation and amortization expense for 1998 totaled $41.7
million, a decrease of $7.4 million or 15% from 1997. Depletion expense totaled
$40.9 million or $1.14 per Mcfe, for 1998 compared to $46.2 million or $1.21 per
Mcfe for 1997. The decrease in depletion expense resulted primarily from lower
oil and natural gas production and a reduction of the depletion rate to $1.08
per Mcfe in the fourth quarter of 1998 due to the increase in proved reserves at
December 31, 1998. Depreciation and amortization expense for 1998 totaled
$807,000 or $0.02 per Mcfe compared to $2.9 million or $0.08 per Mcfe for 1997.
Amortization expense for 1997 included $2.5 million related to the expensing of
a noncompete agreement.

Development, Acquisition and Exploration

     During 1999, the Company incurred $24.0 million in capital expenditures,
including $21.1 million of development expenditures. During the period, the
Company successfully drilled or deepened 36 wells, refraced 113 wells, and
recompleted three wells. The Company also acquired additional interests in
Wattenberg reserves for $2.2 million. The Company anticipates incurring
approximately $35.0 million on the further development of its properties during
2000. The decision to increase or decrease development activity is heavily
dependent on the prices being received for production.

Financial Condition and Capital Resources

     At December 31, 1999, the Company had $330.2 million of assets. Total
capitalization was $297.9 million, of which 56% was represented by stockholders"
equity and 44% by bank debt. During 1999, net cash provided by operations
totaled $49.7 million, as compared to $34.3 million in 1998 ($56.4 million and
$37.0 million prior to changes in working capital, respectively). At December
31, 1999, there were no significant commitments for capital expenditures. The
Company anticipates 2000 capital expenditures, exclusive of acquisitions, to
approximate $35.0 million. The level of these and other future expenditures is
largely discretionary, and the amount of funds devoted to any particular
activity may increase or decrease significantly, depending on available
opportunities and market conditions. The Company plans to finance its ongoing
development, acquisition and exploration expenditures and additional equity
security repurchases using internal cash flow, proceeds from asset sales and
bank borrowings. In addition, joint ventures or future public and private
offerings of debt or equity securities may be utilized.

                                       16
<PAGE>

     In July 1999, in conjunction with the redemption of the 11.75% Senior
Subordinated Notes, the Company entered into a Second Amended and Restated Bank
Credit Agreement (the "Credit Agreement"). The Credit Agreement is a revolving
credit facility in an aggregate amount up to $200.0 million. The amount
available under the facility is adjusted semi-annually, each May 1 and November
1, and equaled $175.0 million at December 31, 1999.

     The Credit Agreement contains certain financial covenants, including but
not limited to a maximum total debt to EBITDA ratio and a minimum current ratio.
The Credit Agreement also contains certain negative covenants, including but not
limited to restrictions on indebtedness; certain liens; guaranties, speculative
derivatives and other similar obligations; asset dispositions; dividends, loans
and advances; creation of subsidiaries; investments; leases; acquisitions;
mergers; changes in fiscal year; transactions with affiliates; changes in
business conducted; sale and leaseback and operating lease transactions; sale of
receivables; prepayment of other indebtedness; amendments to principal
documents; negative pledge causes; issuance of securities; and non-speculative
commodity hedging. Borrowings under the Credit Agreement mature in July 2003,
but may be prepaid at anytime. The Company has periodically negotiated
extensions of the Credit Agreement; however, there is no assurance the Company
will be able to do so in the future. The Company had a restricted payment
basket, as defined by the Credit Agreement, of $1.1 million as of December 31,
1999, which may be used to repurchase common stock, preferred stock and warrants
and pay dividends on its common stock. The restricted payment basket was reset
at January 1, 2000 at $10.0 million.

     The Company may elect that all or a portion of the credit facility bear
interest at a rate equal to: (i) the higher of (a) the prime rate or (b) the
Federal Funds Effective Rate plus .5%, or (ii) the rate at which Eurodollar
deposits for one, two, three or six months (as selected by the Company) are
offered in the interbank Eurodollar market plus a margin which fluctuates from
1.00% to 1.50%, determined by a debt to EBITDA ratio. The average interest rate
under the facility approximated 6.6% during 1999 and was 7.2% at December 31,
1999.

     In October 1998, the Company entered into an interest rate swap contract
for a two-year period, extendable for one additional year at the option of the
third party. The contract is for $30.0 million principal with a fixed interest
rate of 4.57% payable by the Company and the variable interest rate, the three-
month LIBOR, payable by the third party. The difference between the Company's
fixed rate of 4.57% and the three-month LIBOR rate, which is reset every 90
days, is received or paid by the Company in arrears every 90 days. The Company
received $184,000 in 1999 pursuant to this contract.

     The Company had $74.0 million of 11.75% Senior Subordinated Notes due July
15, 2004 outstanding on December 31, 1998. The Notes had been reflected in the
accompanying financial statements at a book value of 105.875% of their principal
amount, the initial call price ($69.9 million of principal amount outstanding as
of December 31, 1998). The Notes became redeemable on July 15, 1999. The Company
redeemed all of the Notes at the call price of 105.875% on July 15, 1999. The
redemption was financed with borrowings under the bank credit facility.

     In conjunction with the appointment of a President in March 1998, the
President purchased 100,000 shares of common stock at $6.875 per share. The
Company loaned him $584,000, or 85% of the purchase price, represented by a
recourse promissory note that bears interest at 8.50% per annum payable each
March 31 until the note is paid. The note matures in March 2001 and is secured
by the 200,000 shares purchased and granted to him in connection with his
employment with the Company.

     The Company has entered into arrangements to monetize its Section 29 tax
credits. These arrangements result in revenue increases of approximately $0.40
per Mcf on production volumes from qualified Section 29 properties. As a result,
additional gas revenues of $1.8 million, $2.1 million and $2.9 million were
recognized during 1997, 1998 and 1999, respectively. These arrangements are
expected to increase revenues through December 31, 2002, at which point the tax
credits expire.

     The Company's primary cash requirements will be to finance acquisitions,
development expenditures, repayment of indebtedness, and general working capital
needs. However, future cash flows are subject to a number of variables,
including the level of production and oil and natural gas prices, and there can
be no assurance that operations and other capital resources will provide cash in
sufficient amounts to maintain planned levels of capital expenditures or that
increased capital expenditures will not be undertaken.

                                       17
<PAGE>

     The Company believes that borrowings available under its Credit Agreement,
projected operating cash flows and the cash on hand will be sufficient to cover
its working capital, capital expenditures, planned development activities and
debt service requirements for the next 12 months. In connection with
consummating any significant acquisition, additional debt or equity financing
will be required, which may or may not be available on terms that are acceptable
to the Company.

Certain Factors That May Affect Future Results

     Statements that are not historical facts contained in this report are
forward-looking statements that involve risks and uncertainties that could cause
actual results to differ from projected results. Such statements address
activities, events or developments that the Company expects, believes, projects,
intends or anticipates will or may occur, including such matters as future
capital, development and exploration expenditures (including the amount and
nature thereof), drilling, deepening or refracing of wells, reserve estimates
(including estimates of future net revenues associated with such reserves and
the present value of such future net revenues), future production of oil and
natural gas, business strategies, expansion and growth of the Company's
operations, cash flow and anticipated liquidity, prospect development and
property acquisition, obtaining financial or industry partners for prospect or
program development, or marketing of oil and natural gas. Factors that could
cause actual results to differ materially ("Cautionary Disclosures") are
described, among other places, in the Marketing, Competition, and Regulation
sections in this Form 10-K and under the caption "Management's Discussion and
Analysis of Financial Condition and Results of Operations." Without limiting the
Cautionary Disclosures so described, Cautionary Disclosures include, among
others: general economic conditions, the market price of oil and natural gas,
the risks associated with exploration, the Company's ability to find, acquire,
market, develop and produce new properties, operating hazards attendant to the
oil and natural gas business, uncertainties in the estimation of proved reserves
and in the projection of future rates of production and timing of development
expenditures, the strength and financial resources of the Company's competitors,
the Company's ability to find and retain skilled personnel, climatic conditions,
labor relations, availability and cost of material and equipment, environmental
risks, the results of financing efforts, and regulatory developments. All
written and oral forward-looking statements attributable to the Company or
persons acting on its behalf are expressly qualified in their entirety by the
Cautionary Disclosures. The Company disclaims any obligation to update or revise
any forward-looking statement to reflect events or circumstances occurring
hereafter or to reflect the occurrence of anticipated or unanticipated events.

Year 2000 Issues

     The Company is aware of the issues associated with the programming code in
many existing computer systems and devices with embedded technology. The "Year
2000" problem concerns the inability of information and technology-based
operating systems to properly recognize and process date-sensitive information
beyond December 31, 1999. Since 1997, the Company has been upgrading its
information systems with Year 2000 compliant software and hardware. The
conversion from calendar year 1999 to calendar year 2000 occurred without any
disruption to the Company's operations or business systems. The Company will
continue to monitor any Year 2000 issues, both internally and with third party
dependencies with respect to vendors, suppliers, customers and other significant
business relationships. Such monitoring will be on going and encompassed in
normal operations. The total costs incurred to date in the assessment,
evaluation and remediation of the Year 2000 matters plus any additional costs
that may be incurred are expected to be less than management's original estimate
of $100,000.

Market and Commodity Risk

     The Company's major market risk exposure is in the pricing applicable to
its oil and natural gas production. Realized pricing is primarily driven by the
prevailing domestic price for oil and spot prices applicable to the Rocky
Mountain and Mid-Continent regions for its natural gas production. Historically,
prices received for oil and gas production have been volatile and unpredictable.
Pricing volatility is expected to continue. Natural gas price realizations
during 1999, exclusive of any hedges, ranged from a monthly low of $1.51 per Mcf
to a monthly high of $2.70 per Mcf. Oil prices, exclusive of any hedges, ranged
from a monthly low of $10.70 per barrel to a monthly high of $24.61 per barrel
during 1999. Both oil and natural gas prices increased significantly from the
first quarter to the fourth quarter of 1999. A significant decline in the prices
of oil or natural gas could have a material adverse effect on the Company's
financial condition and results of operations.

                                       18
<PAGE>

     From time to time, the Company enters into commodity derivative contracts
and fixed-price physical contracts to manage its exposure to oil and gas price
volatility. The Company uses futures contracts, swaps, options and fixed-price
physical contracts to hedge its commodity prices. Realized gains or losses from
price risk management activities are recognized in oil and gas sales revenues in
the period in which the associated production occurs.

     As of December 31, 1999, the Company had entered into swap contracts for
oil (NYMEX based) for approximately 2,700 barrels of oil per day for 2000 at
fixed prices ranging from $18.86 to $24.95 per barrel. Certain swap contracts
for oil (NYMEX based) contain "knock out" provisions. These contracts cover
1,000 barrels of oil per day with a swap price of $21.00 per barrel and a "knock
out" price of $16.00 per barrel for the period January 2000 to December 2000,
500 barrels of oil per day with a swap price of $22.20 per barrel and a "knock
out" price of $17.00 per barrel for the period March 2000 to December 2000 and
500 barrels of oil per day with a swap price of $22.70 per barrel and a "knock
out" price of $16.00 per barrel for the period March 2000 to June 2000. If the
average price of NYMEX WTI crude oil falls below the "knock out" price for the
contract month, the swaps will be considered "knocked out" and no payment will
be made to the Company for the applicable month. The overall weighted average
hedged price for the swap contracts is $21.17 per barrel for 2000 (NYMEX based).
The unrecognized losses on these contracts totaled $1.9 million based on
estimated market values at December 31, 1999.

     As of December 31, 1999, the Company had entered into natural gas swap
contracts for approximately 17,000 MMBtu's per day for the period January 2000
through October 2000 at fixed prices ranging from $2.06 to $2.62 per MMBtu on
CIG index based swap contracts. The Company also has entered into physical
natural gas sale contracts for the delivery of approximately 15,000 of MMBtu's
per day for the period January 2000 through March 2000 at prices ranging from
$2.73 to $2.84 per MMBtu. The weighted average daily volumes and prices for
these natural gas swaps and physical contracts are 21,500 MMBtu's per day at
$2.30 per MMBtu for the period January 2000 through October 2000. The
unrecognized gain on the swap contracts totaled $582,000 based on estimated
market values at December 31, 1999.

     As of February 23, 2000, the Company was a party to the following fixed
price swap and physical arrangements:

<TABLE>
<CAPTION>
                                             Oil (NYMEX)               Gas (CIG)
                                        ----------------------  -----------------------
                                        Average Daily           Average Daily
       Time Period                       Volume (Bbl)   $/Bbl   Volume (MMbtu)  $/MMbtu
- -------------------------               --------------  ------  --------------  -------
<S>                                     <C>             <C>     <C>             <C>
01/01/00 - 03/31/00..................        3,500      $21.14       38,300       $2.56
04/01/00 - 06/30/00..................        3,500       21.55       46,600        2.18
07/01/00 - 09/30/00..................        3,500       22.21       41,700        2.17
10/01/00 - 12/31/00 (a)..............        2,700       21.51       13,500        2.17

01/01/01 - 06/30/01 (a)..............        1,000       23.20            -           -
07/01/01 - 12/31/01 (a)..............          750       23.13            -           -
</TABLE>

     (a)  In addition to the "knock out" oil swaps entered into as of December
31, 1999 described above, the table includes additional "knock-out" swap
contracts the Company has entered into subsequent to year-end. These contracts
are for 500 barrels a day at a weighted average price of $22.38 per barrel for
the fourth quarter of 2000 with a "knock out" provision of $16.00 per barrel,
1,000 barrels per day at a weighted average price of $23.20 for the first six
months of 2001 and 750 barrels per day at a weighted average price of $23.13 per
barrel for the final six months of 2001. Each of the 2001 contracts contain a
"knock out" provision of $17.00 per barrel.

                                       19
<PAGE>

Inflation and Changes in Prices

     While certain costs are affected by the general level of inflation, factors
unique to the oil and natural gas industry result in independent price
fluctuations. Over the past five years, significant fluctuations have occurred
in oil and natural gas prices. Although it is particularly difficult to estimate
future prices of oil and natural gas, price fluctuations have had, and will
continue to have, a material effect on the Company.

     The following table indicates the average oil and natural gas prices
received over the last five years and highlights the price fluctuations by
quarter for 1998 and 1999. Average price computations exclude hedging gains and
losses and other nonrecurring items to provide comparability. Average prices per
Mcfe indicate the composite impact of changes in oil and natural gas prices. Oil
production is converted to natural gas equivalents at the rate of one barrel per
six Mcf.

<TABLE>
<CAPTION>
                                                    Average Prices
                                       ---------------------------------------
                                                  Natural        Equivalent
                                          Oil       Gas             Mcf
                                          ---       ---             ---
                                       (Per Bbl)   (Per Mcf)     (Per Mcfe)
<S>                                    <C>        <C>          <C>
          Annual
          ------
          1995......................    $16.43        $1.34            $1.73
          1996......................     20.47         1.99             2.41
          1997......................     19.54         2.25             2.55
          1998......................     13.13         1.87             1.96
          1999......................     17.71         2.21             2.40

          Quarterly
          ---------

          1998
          ----
          First.....................    $14.70        $2.04            $2.16
          Second....................     13.41         1.95             2.03
          Third.....................     12.83         1.72             1.84
          Fourth....................     11.45         1.78             1.81

          1999
          ----
          First.....................    $11.65        $1.65            $1.72
          Second....................     16.10         1.99             2.17
          Third.....................     19.90         2.48             2.68
          Fourth....................     23.01         2.63             2.92
</TABLE>

                                       20
<PAGE>

                  INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
PATINA OIL & GAS CORPORATION

   Report of Independent Public Accountants...............................   F-2

   Consolidated Balance Sheets as of December 31, 1998 and 1999...........   F-3

   Consolidated Statements of Operations for the years ended
        December 31, 1997, 1998 and 1999..................................   F-4

   Consolidated Statements of Changes in Stockholders' Equity
        for the years ended December 31, 1997, 1998 and 1999..............   F-5

   Consolidated Statements of Cash Flows for the years ended
        December 31, 1997, 1998 and 1999..................................   F-6

   Notes to Consolidated Financial Statements.............................   F-7
</TABLE>

                                      F-1
<PAGE>

                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Stockholders of
Patina Oil & Gas Corporation:

We have audited the accompanying consolidated balance sheets of Patina Oil & Gas
Corporation (a Delaware corporation) and subsidiaries as of December 31, 1998
and 1999, and the related consolidated statements of operations, changes in
stockholders' equity and cash flows for each of the three years in the period
ended December 31, 1999.  These financial statements are the responsibility of
the Company's management.  Our responsibility is to express an opinion on these
financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Patina Oil & Gas Corporation
and subsidiaries as of December 31, 1998 and 1999, and the results of their
operations and their cash flows for each of the three years in the period ended
December 31, 1999, in conformity with generally accepted accounting principles.


Denver, Colorado,                             ARTHUR ANDERSEN LLP
February 23, 2000

                                      F-2
<PAGE>

                         PATINA OIL & GAS CORPORATION

                          CONSOLIDATED BALANCE SHEETS
                       (In thousands except share data)

<TABLE>
<CAPTION>
                                                              December 31,
                                                         ---------------------
                                                            1998        1999
                                                         ---------   ---------
<S>                                                      <C>         <C>
                                    ASSETS
Current assets
 Cash and equivalents                                    $  10,086   $     626
 Accounts receivable                                         9,953      15,694
 Inventory and other                                         3,286       3,030
                                                         ---------   ---------
                                                            23,325      19,350
                                                         ---------   ---------

Oil and gas properties, successful efforts method          598,712     621,767
 Accumulated depletion, depreciation and amortization     (273,935)   (313,732)
                                                         ---------   ---------
                                                           324,777     308,035
                                                         ---------   ---------

Gas facilities and other                                     6,692       3,790
 Accumulated depreciation                                   (4,590)     (2,251)
                                                         ---------   ---------
                                                             2,102       1,539
                                                         ---------   ---------

Other assets, net                                            1,329       1,292
                                                         ---------   ---------
                                                         $ 351,533   $ 330,216
                                                         =========   =========

                     LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities
 Accounts payable                                        $  16,825   $  14,993
 Accrued liabilities                                         6,754       4,115
                                                         ---------   ---------
                                                            23,579      19,108
                                                         ---------   ---------

Senior debt                                                 68,000     132,000
Subordinated notes                                          74,021           -
Other noncurrent liabilities                                 9,957      13,218

Commitments and contingencies

Stockholders' equity
 Preferred Stock, $.01 par, 5,000,000 shares
  authorized, 3,166,860 and 2,383,328 shares issued
  and outstanding                                               32          24
 Common Stock, $.01 par, 100,000,000 shares
  authorized, 15,752,389 and 16,131,310 shares
  issued and outstanding                                       158         161
 Capital in excess of par value                            206,792     188,545
 Deferred compensation                                      (1,038)       (279)
 Retained earnings (deficit)                               (29,968)    (22,561)
                                                         ---------   ---------
                                                           175,976     165,890
                                                         ---------   ---------
                                                         $ 351,533   $ 330,216
                                                         =========   =========
</TABLE>

  The accompanying notes are an integral part of these statements.

                                      F-3
<PAGE>

                         PATINA OIL & GAS CORPORATION

                     CONSOLIDATED STATEMENTS OF OPERATIONS
                     (In thousands except per share data)

<TABLE>
<CAPTION>
                                                          Year Ended December 31,
                                                       ----------------------------
                                                         1997      1998      1999
                                                       --------   -------   -------
<S>                                                    <C>        <C>       <C>
Revenues
   Oil and gas sales                                   $ 99,539   $72,177   $90,407
   Other                                                    794     2,533     1,164
                                                       --------   -------   -------
                                                        100,333    74,710    91,571
                                                       --------   -------   -------

Expenses
   Direct operating                                      18,790    17,340    18,173
   Exploration                                              131        59       666
   General and administrative                             7,154     7,139     6,185
   Interest and other                                    16,038    13,001    10,844
   Depletion, depreciation and amortization              49,076    41,695    40,744
   Impairment of oil and gas properties                  26,047         -         -
                                                       --------   -------   -------
                                                        117,236    79,234    76,612
                                                       --------   -------   -------

Income (loss) before taxes                              (16,903)   (4,524)   14,959
                                                       --------   -------   -------

Provision (benefit) for income taxes
   Current                                                    -         -         -
   Deferred                                                   -         -         -
                                                       --------   -------   -------
                                                              -         -         -
                                                       --------   -------   -------

Net income (loss)                                      $(16,903)  $(4,524)  $14,959
                                                       ========   =======   =======

Basic net income (loss) per common share               $  (1.11)  $ (0.68)  $  0.52
                                                       ========   =======   =======
Diluted net income (loss) per common share             $  (1.11)  $ (0.68)  $  0.50
                                                       ========   =======   =======

Basic weighted average shares outstanding                18,324    16,025    15,972
                                                       ========   =======   =======
Diluted weighted average shares outstanding              18,324    16,025    16,471
                                                       ========   =======   =======
</TABLE>

  The accompanying notes are an integral part of these statements.

                                      F-4
<PAGE>

                         PATINA OIL & GAS CORPORATION

                     CONSOLIDATED STATEMENTS OF CHANGES IN
                             STOCKHOLDERS" EQUITY
                                (In thousands)

<TABLE>
<CAPTION>
                                                                          Capital in                 Retained
                                       Preferred Stock   Common Stock     Excess of     Deferred     Earnings
                                       ---------------  --------------
                                       Shares   Amount  Shares  Amount    Par Value   Compensation   (Deficit)
                                       ------   ------  ------  ------    ---------   ------------   ---------
<S>                                    <C>      <C>     <C>     <C>       <C>         <C>            <C>
 Balance, December 31, 1996             1,594   $   16  18,887  $  189    $ 194,066   $          -   $   1,965

 Repurchase of common and preferred      (126)      (1) (3,101)    (31)     (32,723)             -           -

 Issuance of common                         -        -     664       7        7,958         (1,828)          -

 Issuance of preferred                  1,600       16       -       -       38,516              -           -

 Preferred dividends and accretion         26        -       -       -          708              -      (3,346)

 Common dividends                           -        -       -       -            -              -        (168)

 Net loss                                   -        -       -       -            -              -     (16,903)
                                       ------   ------  ------  ------    ---------   ------------   ---------

 Balance, December 31, 1997             3,094       31  16,450     165      208,525         (1,828)    (18,452)

 Repurchase of common and preferred       (68)      (1) (1,338)    (13)      (8,676)             -           -

 Issuance of common                         -        -     640       6        3,224           (688)          -

 Preferred dividends and accretion        141        2       -       -        3,719              -      (6,335)

 Common dividends                           -        -       -       -            -              -        (657)

 Net loss                                   -        -       -       -            -          1,478      (4,524)
                                       ------   ------  ------  ------    ---------   ------------   ---------

 Balance, December 31, 1998             3,167       32  15,752     158      206,792         (1,038)    (29,968)

 Repurchase of common and preferred      (735)      (7)   (868)     (9)     (24,674)             -        (489)

 Conversion of preferred into common     (168)      (2)    489       4            -              -           -

 Issuance of common                         -        -     758       8        3,108           (334)          -

 Preferred dividends and accretion        119        1       -       -        3,319              -      (6,251)

 Common dividends                           -        -       -       -            -              -        (812)

 Net income                                 -        -       -       -            -          1,093      14,959
                                       ------   ------  ------  ------    ---------   ------------   ---------

 Balance, December 31, 1999             2,383   $   24  16,131  $  161    $ 188,545   $       (279)  $ (22,561)
                                       ======   ======  ======  ======    =========   ============   =========
</TABLE>

       The accompanying notes are an integral part of these statements.

                                      F-5
<PAGE>

                         PATINA OIL & GAS CORPORATION

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                (In thousands)

<TABLE>
<CAPTION>
                                                                                            Year Ended December 31,
                                                                                    ---------------------------------------

                                                                                      1997          1998         1999
                                                                                    --------      ----------   ------------
<S>                                                                                 <C>           <C>          <C>
Operating activities
   Net income (loss)                                                                $ (16,903)    $  (4,524)    $  14,959
   Adjustments to reconcile net income (loss) to net
     cash provided by operations
        Exploration expense                                                               131            59           666
        Depletion, depreciation and amortization                                       49,076        41,695        40,744
        Impairment of oil and gas properties                                           26,047             -             -
        Deferred compensation expense                                                   1,987         1,478         1.046
        Amortization of deferred credits                                                    -          (622)       (1,211)
        Amortization of loan fees                                                           -             -           152
        Gain on sale of other assets                                                     (338)       (1,124)            -
        Changes in current and other assets and liabilities
          Decrease (increase) in
             Accounts receivable                                                        4,548         5,354        (5,741)
             Inventory and other                                                         (213)           63          (180)
          Increase (decrease) in
             Accounts payable                                                           5,639        (3,626)       (1,833)
             Accrued liabilities                                                       (1,248)       (3,092)       (2,412)
             Other assets and liabilities                                                 (81)       (1,330)        3,470
        Net cash provided by operating activities                                   ---------     ---------     ---------
                                                                                       68,645        34,331        49,660
                                                                                    ---------     ---------     ---------

Investing activities
   Acquisition, development and exploration                                           (19,831)      (24,089)      (24,003)
   Other                                                                                1,030           944           334
        Net cash used by investing activities                                       ---------     ---------     ---------
                                                                                      (18,801)      (23,145)      (23,669)
                                                                                    ---------     ---------     ---------

Financing activities
   Decrease in indebtedness                                                           (51,159)       (4,414)      (10,021)
   Deferred credits                                                                     2,005         1,271         2,087
   Loan origination fees                                                                    -             -          (455)
   Issuance of preferred stock                                                         39,432             -             -
   Issuance of common stock                                                             2,795         1,396         2,040
   Cost of common stock and preferred issuance                                           (900)            -             -
   Repurchase of common stock and warrants                                            (28,946)       (7,315)       (6,582)
   Repurchase of preferred stock                                                       (3,809)       (1,375)      (18,106)
   Preferred stock redemption premium                                                       -             -          (489)
   Preferred dividends                                                                 (2,638)       (2,615)       (3,113)
   Common dividends                                                                      (168)         (657)         (812)
                                                                                    ---------     ---------     ---------
          Net cash used by financing activities                                       (43,388)      (13,709)      (35,451)
                                                                                    ---------     ---------     ---------

Increase (decrease) in cash                                                             6,456        (2,523)       (9,460)
Cash and equivalents, beginning of period                                               6,153        12,609        10,086
                                                                                    ---------     ---------     ---------
Cash and equivalents, end of period                                                 $  12,609     $  10,086     $     626
                                                                                    =========     =========     =========
</TABLE>

       The accompanying notes are an integral part of these statements.

                                      F-6
<PAGE>

                         PATINA OIL & GAS CORPORATION

                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


(1)  ORGANIZATION AND NATURE OF BUSINESS

     Patina Oil & Gas Corporation (the "Company" or "Patina"), a Delaware
corporation, was formed in 1996 to hold the assets of Snyder Oil Corporation
("SOCO") in the Wattenberg Field and to facilitate the acquisition of Gerrity
Oil & Gas Corporation ("Gerrity"). In conjunction with the Gerrity Acquisition,
SOCO received 14.0 million common shares. In 1997, a series of transactions
eliminated SOCO's ownership in the Company.

     The Company's operations currently consist of the acquisition, development,
exploitation and production of oil and natural gas properties in the Wattenberg
Field of Colorado's D-J Basin.

(2)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Producing Activities

     The Company utilizes the successful efforts method of accounting for its
oil and natural gas properties. Consequently, leasehold costs are capitalized
when incurred. Unproved properties are assessed periodically within specific
geographic areas and impairments in value are charged to expense. Exploratory
expenses, including geological and geophysical expenses and delay rentals, are
charged to expense as incurred. Exploratory drilling costs are initially
capitalized, but charged to expense if and when the well is determined to be
unsuccessful. Costs of productive wells, unsuccessful developmental wells and
productive leases are capitalized and amortized on a unit-of-production basis
over the life of the remaining proved or proved developed reserves, as
applicable. Oil is converted to natural gas equivalents (Mcfe) at the rate of
one barrel to six Mcf. Amortization of capitalized costs has generally been
provided over the entire Wattenberg Field, as the wells are located in the same
reservoirs. No accrual has been provided for estimated future abandonment costs
as management estimates that salvage value will approximate or exceed such
costs.

     In 1995, the Company adopted Statement of Financial Accounting Standards
No. 121 ("SFAS 121"), "Accounting for the Impairment of Long-Lived Assets." SFAS
121 requires the Company to assess the need for an impairment of capitalized
costs of oil and gas properties on a field-by-field basis. During 1997, the
Company recorded an impairment of $26.0 million to oil and gas properties as the
estimated future cash flows (undiscounted and without interest charges) expected
to result from these assets and their disposition, largely proven undeveloped
drilling locations, was less than their net book value. The impairment primarily
resulted from low year-end oil and natural gas prices. While no impairments were
necessary in 1998 or 1999, changes in underlying assumptions or the amortization
units could result in impairments in the future.

Gas facilities and other

     Depreciation of gas gathering and transportation facilities is provided
using the straight-line method over the estimated useful life of five years.
Equipment is depreciated using the straight-line method with estimated useful
lives ranging from three to five years.

Other Assets

     Other Assets at December 31, 1998 and 1999 were comprised of $1.3 million
and $988,000 of notes receivable from officers and key managers of the Company,
respectively. See Note (9). At December 31, 1999, the balance also included net
loan origination fees of $303,000. These fees are being amortized on a straight-
line basis over 18 months.

                                      F-7
<PAGE>

Section 29 Tax Credits

     The Company has entered into arrangements to monetize its Section 29 tax
credits. These arrangements result in revenue increases of approximately $0.40
per Mcf on production volumes from qualified Section 29 properties. As a result,
additional gas revenues of $1.8 million, $2.1 million and $2.9 million were
recognized during 1997, 1998 and 1999, respectively. These arrangements are
expected to increase revenues through December 31, 2002, at which point the tax
credits expire.

Gas Imbalances

     The Company uses the sales method to account for gas imbalances. Under this
method, revenue is recognized based on the cash received rather than the
Company's proportionate share of gas produced. Gas imbalances at December 31,
1998 and 1999 were insignificant.

Financial Instruments

     The book value and estimated fair value of cash and equivalents was $10.1
million and $626,000 at December 31, 1998 and 1999. The book value and estimated
fair value of the senior debt was $68.0 million and $132.0 million at December
31, 1998 and 1999. The book value of these assets and liabilities approximates
fair value due to the short maturity or floating rate structure of these
instruments. The book value of the Senior Subordinated Notes ("Subordinated
Notes" or "Notes") was $74.0 million and the estimated fair value was $69.9
million at December 31, 1998. The Company redeemed the Notes in July 1999.

     From time to time, the Company enters into commodity derivative contracts
and fixed-price physical contracts to manage its exposure to oil and gas price
volatility. Commodity derivatives contracts, which are generally placed with
major financial institutions or with counterparties of high credit quality that
the Company believes are minimal credit risks, may take the form of futures
contracts, swaps or options. The oil and gas reference prices of these commodity
derivatives contracts are based upon oil and natural gas futures which have a
high degree of historical correlation with actual prices received by the
Company. The Company accounts for its commodity derivative contracts using the
hedge (deferral) method of accounting. Under this method, realized gains and
losses on such contracts are deferred and recognized as an adjustment to oil and
gas sales revenues in the period in which the physical product to which the
contracts relate, is actually sold. Gains and losses on commodity derivative
contracts that are closed before the hedged production occurs are deferred until
the production month originally hedged.

     The Company entered into various swap contracts for oil (NYMEX based) for
1997, 1998 and 1999. The Company recognized a loss of $27,000 in 1997, a gain of
$238,000 in 1998 and a loss of $3.1 million in 1999 related to these swap
contracts.

     The Company entered into various CIG and PEPL index based swap contracts
for natural gas for 1997, 1998 and 1999. The Company recognized gains of $1.8
million and $1.5 million in 1997 and 1998 and a loss of $1.0 million in 1999
related to these swap contracts.

     As of December 31, 1999, the Company had entered into swap contracts for
oil (NYMEX based) for approximately 2,700 barrels of oil per day for 2000 at
fixed prices ranging from $18.86 to $24.95 per barrel. Certain swap contracts
for oil (NYMEX based) contain "knock out" provisions. These contracts cover
1,000 barrels of oil per day with a swap price of $21.00 per barrel and a "knock
out" price of $16.00 per barrel for the period January 2000 to December 2000,
500 barrels of oil per day with a swap price of $22.20 per barrel and a "knock
out" price of $17.00 per barrel for the period March 2000 to December 2000 and
500 barrels of oil per day with a swap price of $22.70 per barrel and a "knock
out" price of $16.00 per barrel for the period March 2000 to June 2000. If the
average price of NYMEX WTI crude oil falls below the "knock out" price for the
contract month, the swaps will be considered "knocked out" and no payment will
be made to the Company for the applicable month. The overall weighted average
hedged price for the swap contracts is $21.17 per barrel for 2000 (NYMEX based).
The unrecognized losses on these contracts totaled $1.9 million based on
estimated market values at December 31, 1999.



                                      F-8
<PAGE>

     As of December 31, 1999, the Company had entered into natural gas swap
contracts for approximately 17,000 MMBtu's per day for the period January 2000
through October 2000 at fixed prices ranging from $2.06 to $2.62 per MMBtu on
CIG index based swap contracts. The Company also has entered into physical
natural gas sale contracts for the delivery of approximately 15,000 of MMBtu's
per day for the period January 2000 through March 2000 at prices ranging from
$2.73 to $2.84 per MMBtu. The weighted average daily volumes and prices for
these natural gas swaps and physical contracts are 21,500 MMBtu's per day at
$2.30 per MMBtu for the period January 2000 through October 2000. The
unrecognized gain on the swap contracts totaled $582,000 based on estimated
market values at December 31, 1999.

     As of February 23, 2000, the Company was a party to the following fixed
price swap and physical arrangements:

<TABLE>
<CAPTION>
                                   Oil (NYMEX)         Gas (CIG)
                               --------------------   --------------
                               Average Daily          Average Daily
Time Period                    Volume (Bbl)   $/Bbl   Volume (MMbtu)  $/MMbtu
- -----------                    -------------  -----   --------------  -------
<S>                           <C>            <C>      <C>             <C>
01/01/00 - 03/31/00...........     3,500     $21.14      38,300         $2.56
04/01/00 - 06/30/00...........     3,500      21.55      46,600          2.18
07/01/00 - 09/30/00...........     3,500      22.21      41,700          2.17
10/01/00 - 12/31/00 (a).......     2,700      21.51      13,500          2.17

01/01/01 - 06/30/01 (a).......     1,000      23.20           -             -
07/01/01 - 12/31/01 (a).......       750      23.13           -             -
</TABLE>

     (a) In addition to the "knock out" oil swaps entered into as of December
31, 1999 described above, the table includes additional "knock-out" swaps the
Company has entered into subsequent to year-end. These contracts are for 500
barrels a day at a weighted average price of $22.38 per barrel for the fourth
quarter of 2000 with a "knock out" provision of $16.00 per barrel, 1,000 barrels
per day at a weighted average price of $23.20 for the first six months of 2001
and 750 barrels per day at a weighted average price of $23.13 per barrel for the
final six months of 2001. Each of the 2001 contracts contain a "knock out"
provision of $17.00 per barrel.

     In October 1998, the Company entered into an interest rate swap contract
for a two-year period, extendable for one additional year at the option of the
third party. The contract is for $30.0 million principal with a fixed interest
rate of 4.57% payable by the Company and the variable interest rate, the three-
month LIBOR, payable by the third party. The difference between the Company's
fixed rate of 4.57% and the three-month LIBOR rate, which is reset every 90
days, is received or paid by the Company in arrears every 90 days. The Company
received $184,000 in 1999 pursuant to this contract. The unrecognized gain on
this contract totaled $495,000 based on estimated market values at December 31,
1999.

     In June 1998, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 133 ("SFAS 133"), "Accounting for Derivative
Instruments and Hedging Activities." SFAS 133 establishes accounting and
reporting standards requiring that every derivative instrument (including
certain derivative instruments embedded in other contracts) be recorded on the
balance sheet as either an asset or liability measured at its fair value. It
also requires that changes in the derivative's fair value be recognized
currently in earnings unless specific hedge accounting criteria are met. Special
accounting for qualifying hedges allows a derivative's gains and losses to
offset related results on the hedged item in the income statement, and requires
that a company must formally document, designate, and assess the effectiveness
of transactions that receive hedge accounting. SFAS 133 is effective for fiscal
years beginning after June 15, 2000. The Company has not yet quantified the
impacts of adopting SFAS 133 on its financial statements and has not determined
the timing of, or method of, adoption of SFAS 133. However, SFAS 133 could
increase volatility in earnings and other comprehensive income.

                                      F-9
<PAGE>

Stock Options and Awards

     The Company accounts for its stock-based compensation plans under the
principles prescribed by the Accounting Principles Board's Opinion No. 25 ("APB
No. 25"), "Accounting for Stock Issued to Employees." Accordingly, stock options
awarded under the Employee Plan and the Non-Employee Directors Plan are
considered to be "noncompensatory" and do not result in recognition of
compensation expense. However, the restricted stock awarded under the Restricted
Stock Plan is considered to be "compensatory" and the Company recognized $2.0
million, $1.5 million and $1.0 million of non-cash general and administrative
expenses for 1997, 1998 and 1999, respectively. See Note (6).

Per Share Data

     The Company uses the weighted average number of shares outstanding in
calculating earnings per share data. When dilutive, options and warrants are
included as share equivalents using the treasury stock method and are included
in the calculation of diluted per share data. Common stock issuable upon
conversion of convertible preferred securities is also included in the
calculation of diluted per share data if their effect is dilutive.

Risks and Uncertainties

     Historically, the market for oil and natural gas has experienced
significant price fluctuations. Prices for natural gas in the Rocky Mountain
region have been particularly volatile in recent years. The price fluctuations
can result from variations in weather, levels of production in the region,
availability of transportation capacity to other regions of the country and
various other factors. Increases or decreases in prices received could have a
significant impact on the Company's future results.

Supplemental Cash Flow Information

     The Company incurred the following significant non-cash items:

<TABLE>
<CAPTION>
                                                       Year-Ended December 31,
                                                       -----------------------
                                                            1998       1999
                                                            ----       ----
     <S>                                               <C>        <C>
     Stock grant award................................    $  688     $  335
     Stock Purchase Plan..............................       173         53
     Dividends and accretion - 8.50% preferred stock..     3,720      3,321
     401(k) profit sharing in common stock............       338        483
</TABLE>

     The 1998 stock grant award represents 100,000 common shares granted to the
President in conjunction with his appointment in the first quarter of 1998 and
has been recorded as Deferred Compensation in the equity section of the
accompanying consolidated balance sheets. The 1999 stock grant award represents
100,000 common shares granted to the Chief Executive Officer in conjunction with
his voluntary reduction in cash salary, waiver of any 1998 bonus and other
compensation arrangements in the second quarter of 1999. The Company recognized
$1.5 million and $1.0 million of non-cash general and administrative expenses
for 1998 and 1999 related to these stock grants and the stock grants awarded to
officers and managers in conjunction with the redistribution of SOCO's ownership
of the Company. See Note (9).

Other

     All liquid investments with an original maturity of three months or less
are considered to be cash equivalents. Certain amounts in prior period
consolidated financial statements have been reclassified to conform with the
current classifications. The consolidated financial statements include the
accounts of the Company and its wholly owned subsidiaries. All significant
intercompany balances and transactions have been eliminated in consolidation.
The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.

                                      F-10
<PAGE>

(3)  OIL AND GAS PROPERTIES

     The cost of oil and gas properties at December 31, 1998 and 1999 included
approximately $585,000 and $225,000 in net unevaluated leasehold costs related
to a prospect in Wyoming. Acreage is generally held for exploration, development
or resale and its value, if any, is excluded from amortization. The following
table sets forth costs incurred related to oil and gas properties:


                                       1997         1998         1999
                                     --------      -------      -------
                                                (In thousands)

      Acquisition............         $ 2,225      $ 2,319      $ 2,215
      Development............          17,013       21,711       21,122
      Exploration and other..             131           59          666
                                      -------      -------      -------
                                      $19,369      $24,089      $24,003
                                      =======      =======      =======

(4)  INDEBTEDNESS

   The following indebtedness was outstanding on the respective dates:


                                                December 31,
                                         -----------------------
                                          1998             1999
                                         -------         -------
                                              (In thousands)


      Bank facilities.................   $68,000         $132,000
      Less current portion............         -                -
                                         -------         --------
      Senior debt, net................   $68,000         $132,000
                                         =======         ========

      Subordinated notes..............   $74,021         $      -
                                         =======         ========

     In July 1999, in conjunction with the redemption of the 11.75% Senior
Subordinated Notes, the Company entered into a Second Amended and Restated Bank
Credit Agreement (the "Credit Agreement"). The Credit Agreement is a revolving
credit facility in an aggregate amount up to $200.0 million. The amount
available under the facility is adjusted semi-annually, each May 1 and November
1, and equaled $175.0 million at December 31, 1999.

     The Company may elect that all or a portion of the credit facility bear
interest at a rate equal to: (i) the higher of (a) the prime rate or (b) the
Federal Funds Effective Rate plus .5%, or (ii) the rate at which Eurodollar
deposits for one, two, three or six months (as selected by the Company) are
offered in the interbank Eurodollar market plus a margin which fluctuates from
1.00% to 1.50%, determined by a debt to EBITDA ratio. The average interest rate
under the facility approximated 6.6% during 1999 and was 7.2% at December 31,
1999.

     In October 1998, the Company entered into an interest rate swap contract
for a two-year period, extendable for one additional year at the option of the
third party. The contract is for $30.0 million principal with a fixed interest
rate of 4.57% payable by the Company and the variable interest rate, the three-
month LIBOR, payable by the third party. The difference between the Company's
fixed rate of 4.57% and the three-month LIBOR rate, which is reset every 90
days, is received or paid by the Company in arrears every 90 days. The Company
received $184,000 in 1999 pursuant to this contract.

     The Credit Agreement contains certain financial covenants, including but
not limited to a maximum total debt to EBITDA ratio and a minimum current ratio.
The Credit Agreement also contains certain negative covenants, including but not
limited to restrictions on indebtedness; certain liens; guaranties, speculative
derivatives and other similar obligations; asset dispositions; dividends, loans
and advances; creation of subsidiaries; investments; leases; acquisitions;
mergers; changes in fiscal year; transactions with affiliates; changes in
business conducted; sale and leaseback and operating lease transactions; sale of
receivables; prepayment of other indebtedness; amendments to principal
documents; negative pledge causes; issuance of securities; and non-speculative
commodity hedging.

                                      F-11
<PAGE>

Borrowings under the Credit Agreement mature in July 2003, but may be prepaid at
anytime. The Company has periodically negotiated extensions of the Credit
Agreement; however, there is no assurance the Company will be able to do so in
the future. The Company had a restricted payment basket, as defined in the
Credit Agreement, of $1.1 million as of December 31, 1999, which may be used to
repurchase common stock, preferred stock and warrants and pay dividends on its
common stock. The restricted payment basket was reset at January 1, 2000 at
$10.0 million.

     In conjunction with the Gerrity Acquisition, the Company assumed $100.0
million of 11.75% Senior Subordinated Notes due July 15, 2004. Under purchase
accounting, the Notes were reflected in the financial statements at a book value
of 105.875% of their principal amount, their initial call price as of July 15,
1999.  The Notes became redeemable on July 15, 1999.  The Company redeemed all
of the Notes at the call price of 105.875% on July 15, 1999. The redemption was
financed with borrowings under the bank credit facility.

     Scheduled maturities of indebtedness for the next five years are zero for
2000, 2001, 2002 and  $132.0 million in 2003. Management intends to review the
facility and extend the maturity on a regular basis; however, there can be no
assurance that the Company will be able to do so.  Cash payments for interest
totaled $16.5 million, $14.0 million and $14.3 million during 1997, 1998 and
1999, respectively.

(5)  STOCKHOLDERS" EQUITY

     A total of 100,000,000 common shares, $0.01 par value, are authorized of
which 16,131,310 were issued and outstanding at December 31, 1999. The common
stock is listed on the New York Stock Exchange.  Prior to December 1997, no
dividends had been paid on common stock.  A quarterly cash dividend of $0.01 per
common share was initiated in December 1997 and was continued through the third
quarter of 1999. The common dividend was increased to $0.02 per common share in
the fourth quarter of 1999.  The following is a schedule of the changes in the
Company's shares of common stock:

<TABLE>
<CAPTION>
                                                             1997        1998         1999
                                                         -----------  -----------  -----------
          <S>                                            <C>          <C>          <C>
          Beginning Common Shares Outstanding..........  18,886,900   16,450,400   15,752,400
          Sale of shares to management.................     303,800      100,000            -
          Shares issued to 8.50% preferred investors...     160,000            -            -
          Exercise of stock options....................      11,700            -      226,300
          Shares issued under Stock Purchase Plan......           -      180,900       92,900
          Shares issued in lieu of salaries & bonuses..           -       76,700      164,800
          Shares issued for directors fees.............       4,500       11,900        8,600
          Conversion of 7.125% preferred...............           -            -      488,800
          Shares issued to deferred compensation plan..           -            -       35,200
          Stock grant (vested).........................     124,000      131,600      168,600
          401(K) profit sharing contribution...........      59,900      138,500       61,300
          Shares repurchased and retired...............  (3,100,400)  (1,337,600)    (867,600)
                                                         ----------   ----------   ----------
          Ending Common Shares Outstanding.............  16,450,400   15,752,400   16,131,300
                                                         ==========   ==========   ==========
</TABLE>

     At December 31, 1999, the Company had 2,919,451 $12.50 common stock
warrants outstanding. These warrants are exercisable at $12.50 for one share of
common stock and expire in May 2001. The common stock warrants are listed on the
New York Stock Exchange.

     A total of 5,000,000 preferred shares, $0.01 par value, are authorized. At
December 31, 1999, the Company had 2,383,328 shares outstanding related to two
issues of preferred stock consisting of 7.125% preferred shares and 8.50%
preferred shares.

     At December 31, 1999 there were 564,817 shares of 7.125% preferred stock
outstanding with an aggregate liquidation preference of $14.1 million. Each
share of 7.125% preferred stock is convertible into common stock at any time at
$8.61 per share, or 2.9036 common shares. The 7.125% preferred stock pays
quarterly cash dividends, when declared by the Board of Directors, based on an
annual rate of $1.78 per share.  The 7.125% preferred stock is currently
redeemable at the option of the Company at $26.069 per share.  The liquidation
preference of the 7.125% preferred stock is $25.00 per share, plus accrued and
unpaid dividends.  In September 1999, the Company called for

                                      F-12
<PAGE>

redemption one-half of its 7.125% preferred stock. The effective date of the
redemption was October 25, 1999. Of the 625,600 preferred shares called, 168,300
were converted into 488,800 shares of common stock and the remaining 457,300
were redeemed for $12.0 million in cash. The cash redemption was financed with
borrowings under the bank credit facility. In December 1999, the Company called
for redemption the remainder of its 7.125% preferred stock. The effective date
of the redemption was January 21, 2000. Of the 564,800 preferred shares called,
51,000 were converted into 148,000 shares of common stock and the remaining
513,800 were redeemed for $13.4 million in cash. The cash redemption was
financed with borrowings under the bank credit facility. Holders of the 7.125%
preferred stock are not generally entitled to vote, except with respect to
certain limited matters. The Company paid $2.6 million, $2.6 million and $2.7
million in preferred dividends during 1997, 1998 and 1999, and had accrued an
additional $327,000 and $114,000 at December 31, 1998 and 1999, respectively,
for dividends. Included in the $2.7 million of preferred stock dividends paid in
1999 was $489,000 of redemption premium paid to shareholders that elected to
redeem their preferred stock for cash on October 25, 1999.

     At December 31, 1999, there were 1,818,511 shares of 8.50% preferred stock
outstanding with an aggregate liquidation preference of $45.5 million.  Each
share of the 8.50% preferred stock is convertible into common stock at any time
at $9.50 per share or 2.6316 common shares.  The 8.50 % preferred stock pays
quarterly dividends, when declared by the Board of Directors, and are payable-
in-kind ("PIK Dividend") until October 1999, and in cash thereafter.  The 8.50%
preferred stock is redeemable at the option of the Company at any time after
October 2000 at 106% of its stated value declining by 2% per annum thereafter.
The liquidation preference is $25.00 per share, plus accrued and unpaid
dividends.  The 8.50% preferred stock is privately held. Holders of the 8.50%
preferred stock are generally entitled to vote with the common stock, based upon
the number of shares of common stock into which the shares of 8.50% preferred
stock are convertible. The Company paid $661,000, $3.5 million, and $3.7 million
in dividends during 1997, 1998 and 1999, respectively. Dividends through October
21, 1999 were paid in kind ("PIK"). As such, the Company issued 26,437, 141,240
and 119,577 of additional 8.50% preferred shares as PIK dividends in 1997, 1998
and 1999, respectively.  Dividends subsequent to October 21, 1999 of $737,000
were paid in cash in the fourth quarter of 1999.

     The Company adopted Statement of Financial Accounting Standards No. 128
("SFAS 128"), "Earnings per Share" during 1997.  SFAS 128 specifies computation,
presentation and disclosure requirements for earnings per share for entities
with publicly held common stock or potential common stock.

<TABLE>
<CAPTION>
                                                                          Year Ended December 31,
                                     --------------------------------------------------------------------------------------
                                                 1997                        1998                         1999
                                     --------------------------------------------------------------------------------------
<S>                                  <C>        <C>      <C>        <C>        <C>       <C>       <C>      <C>       <C>
                                         Net    Common     Per          Net    Common      Per       Net    Common     Per
                                         Loss   Shares    Share        Loss    Shares     Share    Income   Shares    Share
                                         ----   ------   -------       ----    ------    ------    ------   ------    -----
Basic net income (loss)              $ (16,903)  18,324             $ (4,524)    16,025            $14,959   15,972
7.125% preferred stock dividends        (2,638)       -               (2,615)         -             (2,681)       -        -
8.50% preferred stock dividends           (661)       -               (3,531)         -             (3,727)       -
Preferred stock accretion                  (47)       -                 (189)         -               (331)       -
                                      --------   ------               ------     ------             ------   ------
Basic net income (loss) attributable
 to common stock                       (20,249)  18,324    $(1.11)   (10,859)    16,025  $ (0.68)    8,220   15,972    $0.52
                                                           ======                        =======                       =====

Effect of dilutive securities:
7.125% preferred stock                       -        -                    -          -                  -        -
8.50% preferred stock                        -        -                    -          -                  -        -
Stock options                                -        -                    -          -                  -      222
Stock grant                                  -        -                    -          -                  -      277
$12.50 common stock warrants                 -        -                    -          -                  -        -
                                     ---------   ------             --------   --------           --------  -------
Diluted net income (loss) attributab
 to common stock                     $ (20,249)  18,324    $(1.11)  $(10,859)    16,025  $ (0.68) $  8,220   16,471    $0.50
                                     =========   ======    ======   ========   ========  =======  ========   ======    =====
</TABLE>

   The potential common stock equivalents of the 7.125% and 8.50% preferred
stock, $12.50 common stock warrants and stock options were anti-dilutive for all
periods presented except 1999.


                                      F-13
<PAGE>

(6)  EMPLOYEE BENEFIT PLANS

401(k) Savings

     The Company has a 401(k) profit sharing and savings plan (the "401(k)
Plan"). Eligible employees may make voluntary contributions to the 401(k) Plan.
The amount of employee contributions is limited as specified in the 401(k) Plan.
The Company may, at its discretion, make additional matching or profit sharing
contributions to the 401(k) Plan. The Company has historically made profit
sharing contributions to the 401(k) Plan, which totaled $453,000, $338,000 and
$483,000 for 1997, 1998 and 1999, respectively. The profit sharing contributions
were made in shares of the Company's common stock of 59,900, 138,500 and 61,300
common shares in 1997, 1998 and 1999, respectively.

Stock Purchase Plan

     In 1998, the Company adopted and the stockholders approved a stock purchase
plan ("Stock Purchase Plan"). Pursuant to the Stock Purchase Plan, officers,
directors and certain managers are eligible to purchase shares of common stock
at prices ranging from 50% to 85% of the closing price of the stock on the
trading day prior to the date of purchase ("Closing Price").  In addition,
employee participants may be granted the right to purchase shares pursuant to
the Stock Purchase Plan with all or a part of their salary and bonus.  A total
of 500,000 shares of common stock are reserved for possible purchase under the
Stock Purchase Plan.  In May 1999, an amendment to the Stock Purchase Plan was
approved by the stockholders allowing for the annual renewal of the 500,000
shares of common stock reserved for possible purchase under the Plan.  In 1998,
the Board of Directors approved 291,300 common shares (exclusive of shares
available for purchase with participants" salaries and bonuses) for possible
purchase by participants at 75% of the Closing Price during the current Plan
Year as defined in the Stock Purchase Plan. As of December 31, 1998,
participants had purchased 257,600 shares of common stock, including 76,700
shares purchased with participant's 1997 bonuses, at prices ranging from $3.69
to $7.31 per share ($2.77 to $5.48 net price per share), resulting in cash
proceeds to the Company of $1.3 million. In 1999, the Board of Directors
approved 136,300 common shares (exclusive of shares available for purchase with
participants" salaries and bonuses) for possible purchase by participants at 75%
of the Closing Price during the current Plan Year as defined in the Stock
Purchase Plan.  As of December 31, 1999, participants had purchased 92,900
shares of common stock at prices ranging from $5.06 to $8.63 per share ($3.80 to
$6.47 net price per share), resulting in cash proceeds to the Company of
$395,000. The Company recorded non-cash general and administrative expenses of
$173,000 and $53,000 associated with these purchases for 1998 and 1999,
respectively.

Stock Option and Award Plans

     In 1996, the shareholders adopted a stock option plan for employees
providing for the issuance of options at prices not less than fair market value.
Options to acquire the greater of up to three million shares of common stock or
10% of outstanding diluted common shares may be outstanding at any given time.
The specific terms of grant and exercise are determinable by a committee of
independent members of the Board of Directors. A summary by year of stock
options granted under the stock option plan for employees is summarized below:

<TABLE>
<CAPTION>
                                                    Weighted
                                       Range         Average
                                    of Exercise      Exercise
                          Options    Price Per      Price Per
              Year        Granted   Common Share   Common Share
              ----        -------   -------------  ------------
          <S>            <C>        <C>            <C>
          1996.........    512,000      $7.75         $7.75
          1997.........    521,000  $8.75 - $9.88     $9.75
          1998.........    614,000  $6.56 - $7.19     $7.03
          1999.........    630,000  $2.94 - $9.13     $3.54
</TABLE>

     The options generally vest over a three-year period (30%, 60%, 100%) and
expire five years from the date of grant, except for 250,000 five-year options
which were fully vested at the date of grant in October 1997 at an exercise
price of $9.88.

                                      F-14
<PAGE>

     In 1996, the shareholders adopted a stock grant and option plan (the
"Directors" Plan") for non-employee Directors. The Directors" Plan provides for
each non-employee Director to receive common shares having a market value equal
to $2,500 quarterly in payment of one-half their retainer. A total of 3,600
shares were issued in 1996, 4,500 shares were issued in 1997, 11,900 shares were
issued in 1998 and 8,600 were issued in 1999. It also provides for 5,000 options
to be granted annually to each non-employee Director. A summary by year of stock
options granted under the Directors" Plan is summarized below:

<TABLE>
<CAPTION>
                                                  Weighted
                                     Range         Average
                                  of Exercise      Exercise
                        Options    Price Per      Price Per
            Year        Granted   Common Share   Common Share
            ----        -------   -------------  ------------
          <S>           <C>       <C>            <C>
          1996.........  20,000    $    7.75       $7.75
          1997.........  30,000    $8.63 - $10.31  $9.19
          1998.........  35,000    $7.19 - $ 7.75  $7.59
          1999.........  30,000    $2.94 - $ 5.13  $4.76
</TABLE>

     The options generally vest over a three-year period (30%, 60%, 100%) and
expire five years from the date of grant.

     In 1997, the shareholders approved a special stock grant and purchase plan
for certain officers and managers ("Management Investors") in conjunction with
the redistribution of SOCO's ownership in the Company.  The plan, which was
amended effective December 31, 1997, provided for the grant of certain
restricted common shares to the Management Investors.  These shares vest at 25%
per year on January 1, 1998, 1999, 2000 and 2001. The non-vested granted common
shares have been recorded as Deferred Compensation in the equity section of the
accompanying consolidated balance sheets.  The Management Investors
simultaneously purchased additional common shares from the Company at $9.875 per
share.  A portion of the purchase ($404,000) was financed by the Company. See
Note (9).

     In conjunction with the appointment of a President in March 1998, the
President was included in the stock grant and purchase plans.  He was granted
100,000 restricted common shares that vest at 33% per year in March 1999, 2000
and 2001.  The non-vested granted common shares have been recorded as Deferred
Compensation in the equity section of the accompanying consolidated balance
sheets.  The President simultaneously purchased 100,000 common shares from the
Company at $6.875 per share.  A portion of this purchase ($584,000) was financed
by the Company. See Note (9).

     In April 1999, the Chief Executive Officer was granted 100,000 restricted
shares of common stock in consideration of his voluntary reduction in cash
salary, waiver of any 1998 bonus and other compensation arrangements. The shares
vested ratably throughout 1999.

     The Company recognized $2.0 million, $1.5 million and $1.0 million of non-
cash general and administrative expenses for 1997, 1998 and 1999 with respect to
these stock grants.

     At December 31, 1999, the Company had a fixed stock option compensation
plan, which is described above. The Company applies APB Opinion No. 25,
"Accounting for Stock Issued to Employees," and related Interpretations in
accounting for the plans. Accordingly, no compensation cost has been recognized
for these fixed stock option plans. Had compensation cost for the Company's
fixed stock option compensation plans been determined consistent with Statement
of Financial Accounting Standards No. 123 ("SFAS 123"), "Accounting for Stock-
Based Compensation," the Company's net income (in thousands) and earnings per
share would have been reduced to the pro forma amounts indicated below:



                                      F-15
<PAGE>

                                                   1997       1998       1999
                                                   ----       ----       ----


Net income (loss)            As Reported        $(16,903)   $(4,524)   $14,959
                             Pro forma           (18,611)    (5,724)    13,954

Basic net income (loss)
 per common share            As Reported        $  (1.11)   $ (0.68)   $  0.52
                             Pro forma             (1.20)     (0.75)      0.45
Diluted net income (loss)
 per common share            As Reported        $  (1.11)   $ (0.68)   $  0.50
                             Pro forma             (1.20)     (0.75)      0.44

     The fair value of each option grant is estimated on the date of grant using
the Black-Scholes option-pricing model with the following weighted-average
assumptions used for grants in 1997, 1998 and 1999: dividend yield of 0%, 0% and
1%; expected volatility of 35%, 46% and 47%; risk-free interest rate of 6.0%,
5.5% and 5.2%; and expected life of 4.5 years, 4.5 years and 4.5 years,
respectively.

     A summary of the status of the Company's fixed stock option plan as of
December 31, 1997, 1998 and 1999 and changes during the years are presented
below:

<TABLE>
<CAPTION>

                                                     1997                 1998                  1999
                                             --------------------  --------------------  --------------------
                                                         Weighted              Weighted              Weighted
                                                         Average               Average               Average
                                                         Exercise              Exercise              Exercise
                                               Shares     Price      Shares     Price      Shares     Price
                                             ----------  --------  ----------  --------  ----------  --------
<S>                                          <C>         <C>       <C>         <C>       <C>         <C>

   Outstanding at beginning of year........    503,000      $7.75  1,001,000      $8.70  1,526,000      $8.07
   Granted.................................    551,000       9.53    649,000       7.06    660,000       3.60
   Exercised...............................    (12,000)      7.75          -          -   (226,000)      6.43
   Forfeited...............................    (41,000)      8.38   (124,000)      7.91   (220,000)      8.05
                                             ---------             ---------             ---------
   Outstanding at end of year..............  1,001,000      $8.70  1,526,000      $8.07  1,740,000      $6.59
                                             =========             =========             =========

   Options exercisable at year-end.........    389,000               582,000               747,000
                                             =========             =========             =========

   Weighted-average fair value of options
      granted during the year..............                 $3.84                 $3.17                 $1.48

</TABLE>
     The following table summarizes information about fixed stock options
outstanding at December 31, 1999:

<TABLE>
<CAPTION>

                                              Options Outstanding                      Options Exercisable
                                       --------------------------------                -------------------
                                 Number                                              Number
                             Outstanding at   Weighted-Avg.      Weighted-       Exercisable at       Weighted-
                              December 31,      Remaining         Average         December 31,         Average
 Exercise Price                   1999       Contractual Life  Exercise Price         1999          Exercise Price
- ----------------             --------------  ----------------  --------------  -------------------  --------------
<S>                          <C>             <C>               <C>             <C>                  <C>

 $2.94 to 5.13..............        588,000         4.2 years           $3.54                    -           $   -
 6.56  to 7.75..............        730,000         2.5 years            7.30              399,000            7.51
 7.81  to 10.31.............        422,000         2.6 years            9.59              348,000            9.69
                                  ---------                                                -------
 $2.94 to 10.31.............      1,740,000         3.1 years           $6.59              747,000           $8.53
                                  =========                                                =======
 </TABLE>

                                     F-16
<PAGE>

(7)  FEDERAL INCOME TAXES

     Prior to the Gerrity Acquisition, the Company had been included in SOCO's
consolidated tax return. Current and deferred income tax provisions allocated by
SOCO were determined as though the Company filed as an independent company,
making the same tax return elections used in SOCO's consolidated return. Since
the Gerrity Acquisition, the Company has filed its own tax returns.

  A reconciliation of the federal statutory rate to the Company's effective
rate as it applies to the provision (benefit) for the years ended December 31,
1997, 1998 and 1999 follows:

<TABLE>
<CAPTION>

                                                                                                 1997          1998          1999
                                                                                              ----------     ---------     --------
<S>                                                                                           <C>            <C>           <C>

Federal statutory rate......................................................................       (35%)          (35%)         35%
Increase (decrease) in valuation allowance against deferred tax asset.......................        35%            35%         (35%)
                                                                                              --------        -------       ------
Effective income tax rate                                                                            -              -            -
                                                                                              ========        =======       ======

   For book purposes the components of the net deferred asset and liability at December 31,
    1998 and 1999 were:

                                                                                                    1998              1999
                                                                                                    ----              ----
                                                                                                         (In thousands)
Deferred tax assets
   NOL carryforwards........................................................................      $ 29,080             $30,940
   Deferred deductions and other............................................................         4,941               4,025
                                                                                                  --------             -------
                                                                                                    34,021              34,965
                                                                                                   -------              ------
Deferred tax liabilities
     Depreciable and depletable property....................................................        20,582              26,812
                                                                                                  --------              ------

Deferred tax assets.........................................................................        13,439               8,153
                                                                                                  --------              ------

Valuation allowance.........................................................................       (13,439)             (8,153)
                                                                                                  --------              ------

Net deferred tax asset......................................................................      $      -             $     -
                                                                                                  ========             =======
</TABLE>

     For tax purposes, the Company had regular net operating loss carryforwards
of approximately $88.4 million and alternative minimum tax ("AMT") loss
carryforwards of approximately $42.0 million at December 31, 1999. Utilization
of the regular and AMT net operating loss carryforwards will be limited to
approximately $12.5 million per year as a result of the redistribution of SOCO's
majority ownership in the Company in October 1997. In addition, utilization of
$31.9 million regular net operating loss carryforwards and $31.6 million AMT
loss carryforwards will be limited to $5.2 million per year as a result of the
Gerrity Acquisition in May 1996. These carryforwards expire from 2006 through
2018. At December 31, 1999, the Company had alternative minimum tax credit
carryforwards of $650,000 that are available indefinitely. No cash payments were
made by the Company for federal taxes during 1997 and 1999. The Company paid
$239,000 of federal taxes during 1998.


(8)  MAJOR CUSTOMERS

     During 1997, 1998 and 1999, Duke Energy Field Services, Inc. accounted for
41%, 38% and 37%, Amoco Production Company accounted for 16%, 13% and 24%, Enron
North America accounted for 5%, 10%, and 4% and Aurora Natural Gas, LLC
accounted for 0%, 0% and 10% of revenues, respectively. Management believes that
the loss of any individual purchaser would not have a long-term material adverse
impact on the financial position or results of operations of the Company.

                                     F-17
<PAGE>

(9)  RELATED PARTY

     In October 1997, certain officers and managers purchased common shares at
$9.875 per share from the Company. A portion of this purchase ($404,000) has
been financed by the Company through the issuance of 8.50% recourse promissory
notes. These notes are secured by the common stock purchased and additional
common shares granted to the respective officers and managers. Interest is due
annually and the notes mature in January 2001. These notes have been reflected
as Other Assets in the accompanying consolidated balance sheets.

     In conjunction with the appointment of a President in March 1998, the
President purchased 100,000 shares of common stock at $6.875 per share. The
Company loaned him $584,000, or 85% of the purchase price, represented by a
recourse promissory note that bears interest at 8.50% per annum payable each
March 31 until the note is paid. The note matures in March 2001 and is secured
by all of the shares purchased and granted to him (100,000 shares) in connection
with his employment with the Company. The note has been reflected as Other
Assets in the accompanying consolidated balance sheets. In consideration of the
then depressed stock price and overall lower 1998 bonuses, the interest due as
of March 31, 1999 under the Management Investors" and President's notes was
forgiven.

(10) COMMITMENTS AND CONTINGENCIES

     The Company leases office space and certain equipment under non-cancelable
operating leases. Future minimum lease payments under such leases approximate
$500,000 per year from 2000 through 2001.

     The Company is a party to various lawsuits incidental to its business, none
of which are anticipated to have a material adverse impact on its financial
position or results of operations.


(11) UNAUDITED SUPPLEMENTAL OIL AND GAS RESERVE INFORMATION

     Independent petroleum consultants audited the Company's total proved
reserves at December 31, 1997, 1998 and 1999. All reserve estimates are based on
economic and operating conditions at that time. Future net cash flows as of each
year-end were computed by applying then current prices to estimated future
production less estimated future expenditures (based on current costs) to be
incurred in producing and developing the reserves. All reserves are located
onshore in the United States.

     Future prices received for production and future production costs may vary,
perhaps significantly, from the prices and costs assumed for purposes of these
estimates. There can be no assurance that the proved reserves will be developed
within the periods indicated or that prices and costs will remain constant. With
respect to certain properties that historically have experienced seasonal
curtailment, the reserve estimates assume that the seasonal pattern of such
curtailment will continue in the future. There can be no assurance that actual
production will equal the estimated amounts used in the preparation of reserve
projections.

   There are numerous uncertainties inherent in estimating quantities of proved
reserves and in projecting future rates of production and timing of development
expenditures. The data in the tables below represent estimates only. Oil and gas
reserve engineering must be recognized as a subjective process of estimating
underground accumulations of oil and natural gas that cannot be measured in an
exact way, and estimates of other engineers might differ materially from those
shown below. The accuracy of any reserve estimate is a function of the quality
of available data and engineering and geological interpretation and judgement.
Results in drilling, testing and production after the date of the estimate may
justify revisions. Accordingly, reserve estimates are often materially different
from the quantities of oil and gas that are ultimately recovered.


                                     F-18
<PAGE>

Quantities of Proved Reserves

                                                    Oil       Natural Gas
                                                  -------     ------------
                                                  (MBbl)         (MMcf)


   Balance, December 31, 1996..............       22,475          296,659
    Revisions..............................       (4,418)         (27,671)
    Extensions, discoveries and additions..          784           11,162
    Production.............................       (1,889)         (26,863)
    Purchases..............................          101            3,193
    Sales..................................          (77)            (845)
                                                  ------          -------

   Balance, December 31, 1997..............       16,976          255,635
    Revisions..............................       (3,033)         (23,084)
    Extensions, discoveries and additions..        1,890           77,120
    Production.............................       (1,699)         (25,522)
    Purchases..............................          108            2,465
    Sales..................................           (2)             (19)
                                                  ------          -------

   Balance, December 31, 1998..............       14,240          286,595
    Revisions..............................        1,665           18,498
    Extensions, discoveries and additions..        3,006           66,191
    Production.............................       (1,653)         (29,477)
    Purchases..............................          202           20,425
    Sales..................................          (40)            (971)
                                                  ------          -------

   Balance, December 31, 1999..............       17,420          361,261
                                                  ======          =======


Proved Developed Reserves
                                                   Oil        Natural Gas
                                                  ------      -----------
                                                  (MBbl)        (MMcf)

December 31, 1996..........................       15,799          242,777
                                                  ======          =======

December 31, 1997..........................       14,594          232,058
                                                  ======          =======

December 31, 1998..........................       13,655          244,736
                                                  ======          =======

December 31, 1999..........................       16,633          307,560
                                                  ======          =======

                                    F-19
<PAGE>

Standardized Measure
                                                      December 31,
                                           -----------------------------------
                                              1997        1998        1999
                                           ----------  ----------  -----------
                                                     (In thousands)

Future cash inflows.....................   $ 894,390   $ 692,747   $1,273,591
Future costs
 Production.............................    (255,599)   (220,846)    (323,859)
 Development............................     (87,414)    (68,125)    (126,978)
                                           ---------   ---------   ----------
Future net cash flows...................     551,377     403,776      822,754
Undiscounted income taxes...............     (89,094)    (41,977)    (192,956)
                                           ---------   ---------   ----------
After tax net cash flows................     462,283     361,799      629,798
10% discount factor.....................    (185,953)   (156,395)    (267,270)
                                           ---------   ---------   ----------
Standardized measure....................   $ 276,330   $ 205,404   $  362,528
                                           =========   =========   ==========


Changes in Standardized Measure

                                                     December 31,
                                           ---------------------------------
                                              1997        1998       1999
                                           ----------  ----------  ---------
                                                    (In thousands)


Standardized measure, beginning of year..  $ 499,936   $ 276,330   $  205,404
Revisions:
    Prices and costs.....................   (312,526)   (124,977)     188,474
    Quantities...........................      6,134       8,396        3,642
    Development costs....................    (14,783)     (3,310)      (3,003)
    Accretion of discount................     49,994      27,633       20,540
    Income taxes.........................    105,189      23,944      (75,287)
    Production rates and other...........     (8,433)     (5,449)      (6,299)
                                           ---------   ---------   ----------
    Net revisions........................   (174,425)    (73,763)     128,067
Extensions, discoveries and additions....     11,756      33,910       64,048
Production...............................    (81,149)    (54,837)     (72,234)
Future development costs incurred........     17,013      21,711       21,122
Purchases (a)............................      3,900       2,068       17,026
Sales (b)................................       (701)        (15)        (905)
                                           ---------   ---------   ----------
Standardized measure, end of year........  $ 276,330   $ 205,404   $  362,528
                                           =========   =========   ==========

(a) "Purchases" includes the present value at the end of the period acquired
during the year plus cash flow received on such properties during the period,
rather than their estimated present value at the time of the acquisition.

(b) "Sales" represents the present value at the beginning of the period of
properties sold, less the cash flow received on such properties during the
period.

                                     F-20
<PAGE>

PART IV. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K


(a)  Exhibits -

     2.1      Amended and Restated Agreement and Plan of Merger dated as of
              January 16, 1996 as amended and restated as of March 20, 1996 --
              incorporated by reference to Exhibit 2.1 to Amendment No. 1 to the
              Registration Statement on Form S-4 of Patina Oil & Gas
              Corporation. (Registration No. 333-572)

     3.1      Certificate of Incorporation -- incorporated herein by reference
              to the Exhibit 3.1 to the Company's Registration Statement on Form
              S-4. (Registration No. 333-572)

     3.2      Bylaws -- incorporated herein by reference to Exhibit 3.3 to the
              Company's Registration Statement on Form S-4. (Registration No.
              333-572)

     3.3      Certificate of Ownership and Merger of Gerrity Oil & Gas
              Corporation with and into the Company, effective March 21, 1997.
              (Incorporated herein by reference to Exhibit 4.3 of the Company's
              Form 10-Q for the quarter ended March 31, 1997)

     10.1.1   Second Amended and Restated Credit Agreement dated July 15, 1999
              by and among the Company, as Borrower, and Chase Bank of Texas,
              National Association, as Administrative Agent, Bank of America,
              N.A., as Syndication Agent, Bank One, Texas, N.A., as
              Documentation and certain commercial lending institutions.
              (Incorporated herein by reference to Exhibit 10.1 of the Company's
              Form 10-Q for the quarter ended June 30, 1999)

     10.1.2   First Amendment to the Second Amended and Restated Credit
              Agreement dated July 15, 1999 by and among the Company, as
              Borrower, and Chase Bank of Texas, National Association, as
              Administrative Agent, Bank of America, N.A., as Syndication Agent,
              Bank One, Texas, N.A., as Documentation and certain commercial
              lending institutions. *

     10.1.3   Second Amendment to the Second Amended and Restated Credit
              Agreement dated July 15, 1999 by and among the Company, as
              Borrower, and Chase Bank of Texas, National Association, as
              Administrative Agent, Bank of America, N.A., as Syndication Agent,
              Bank One, Texas, N.A., as Documentation and certain commercial
              lending institutions. *

     10.2     Patina Oil & Gas Corporation Profit Sharing and Savings Plan and
              Trust, effective January 1, 1997. (Incorporated herein by
              reference to Exhibit 10.3 of the Company's Form 10-K for the year
              ended, December 31, 1997)

     10.3.1   Deferred Compensation Plan for Selected Employees adopted by the
              Company effective May 1, 1996. (Incorporated herein by reference
              to Exhibit 10.3.1 of the Company's Form 10-K for the year ended
              December 31, 1996)

     10.3.2   Amended and Restated Patina Oil & Gas Corporation Deferred
              Compensation Plan for Select Employees as adopted May 1, 1996 and
              amended as of September 30, 1997. (Incorporated herein by
              reference to Exhibit 10.3.2 of the Company's Form 10-K for the
              year ended December 31, 1997)

     10.4.1   Patina Oil & Gas Corporation 1998 Stock Purchase Plan.
              (Incorporated herein by reference to Exhibit of the Company's Form
              10-K for the year ended December 31, 1997)

                                     F-21
<PAGE>

     10.4.2   Amendment No. 1 to the Patina Oil & Gas Corporation 1998 Stock
              Purchase Plan. (Incorporated herein by reference to Exhibit 10.3
              of the Company's Form 10-Q for the quarter ended June 30, 1999)

     10.5.1   Sublease Agreement dated as of May 1, 1996 by and between Snyder
              Oil Corporation, as Sublandlord, and the Company, as Subtenant.
              (Incorporated herein by reference to Exhibit 10.4 of the Company's
              Form 10-Q for the quarter ended June 30, 1996)

     10.5.2   Sublease Agreement dated as of October 7, 1996 by and between
              Gerrity Oil & Gas Corporation, as Sublandlord, and Shadownet
              Technologies, L.L.C. (Incorporated herein by reference to Exhibit
              10.4 of the Company's Form 10-Q for the quarter ended September
              30, 1996)

     10.6     Stock Purchase Agreement dated as of July 31, 1997 by and among
              the Company and the Investors named therein as amended on
              September 19, 1997. (Incorporated herein by reference to Exhibit
              10.5 of the Company's Form 10-Q for the quarter ended September
              30, 1997)

     10.7     Employment Agreement dated July 31, 1997 by and between the
              Company and Thomas J. Edelman. (Incorporated herein by reference
              to Exhibit 10.7 of the Company's Form 10-Q for the quarter ended
              September 30, 1997)

     10.8     Management Stock Purchase Agreement dated as of September 4, 1997
              by and among the Company and certain Management Investors.
              (Incorporated herein by reference to Exhibit 10.8 of the Company's
              Form 10-Q for the quarter ended September 30, 1997)

     10.9     Restricted Stock Agreement dated as of September 4, 1997 by and
              among the Company and certain Management Investors. (Incorporated
              herein by reference to Exhibit 10.9 of the Company's Form 10-Q for
              the quarter ended September 30, 1997)

     10.10    Stock Purchase Agreement dated March 16, 1998 by and between the
              Company and Jay W. Decker. (Incorporated herein by reference to
              Exhibit 10.11 of the Company's Form 10-K for the year ended
              December 31, 1997)

     10.11    Restricted Stock Agreement dated March 16, 1998 by and between the
              Company and Jay W. Decker. (Incorporated herein by reference to
              Exhibit 10.11 of the Company's Form 10-K for the year ended
              December 31, 1997)

     11       Computation of Per Share Earnings.*

     12       Computation of Ratio of Earnings to Fixed Charges and Ratio of
              Earnings to Combined Fixed Charges and Preferred Stock Dividends.*

     23       Consent of independent public accountants. *

     27       Financial Data Schedule.*


*Filed herewith

(b)  No reports on Form 8-K were filed by Registrant during the quarter ended
     December 31, 1999.

                                     F-22
<PAGE>

                                   SIGNATURES


     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned thereunto duly authorized.


/s/ Thomas J. Edelman        Chairman of the Board           February 24, 2000
- ---------------------
Thomas J. Edelman            (Principal Executive Officer)


/s/ Jay W. Decker            President and Director          February 24, 2000
- -----------------
Jay W. Decker


/s/ David J. Kornder         Vice President and              February 24, 2000
- --------------------
David J. Kornder             Chief Financial Officer


/s/ Christopher C. Behrens   Director                        February 24, 2000
- --------------------------
Christopher C. Behrens


/s/ Robert J. Clark          Director                        February 24, 2000
- -------------------
Robert J. Clark


/s/ Thomas R. Denison        Director                        February 24, 2000
- ---------------------
Thomas R. Denison


/s/ Elizabeth K. Lanier      Director                        February 24, 2000
- -----------------------
Elizabeth K. Lanier


/s/ Alexander P. Lynch       Director                        February 24, 2000
- ----------------------
Alexander P. Lynch

                                     F-23

<PAGE>

                                                                  EXHIBIT 10.1.2


        FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT
        ---------------------------------------------------------------

     This First Amendment to Second Amended and Restated Credit Agreement (this
First Amendment) is executed as of the 25th day of October, 1999, by and among
- ---------------
Patina Oil & Gas Corporation, a Delaware Corporation (Borrower), Chase Bank of
                                                      --------
Texas, National Association, as Administrative Agent (Administrative Agent), and
                                                      --------------------
the financial institutions parties hereto as Banks (individually a Bank and
                                                                   ----
collectively Banks).
             -----

                                 W I T N E S E T H:
                                 - - - - - - - - -

     WHEREAS, Borrower, Administrative Agent and Banks are parties to that
certain Second Amended and Restated Credit Agreement dated as of July 15, 1999
(as amended, the Credit Agreement) (unless otherwise defined herein, all terms
                 ----------------
used herein with their initial letter capitalized shall have the meaning given
such terms in the Credit Agreement); and

     WHEREAS, pursuant to the Credit Agreement, Banks have made a revolving
credit loan to Borrower; and

     WHEREAS, Borrower has (a) notified Administrative Agent and Banks that
effective  October 25, 1999 Borrower redeemed 623,000 shares of its Original
Preferred Stock, 457,000 shares of which were redeemed for $12,000,000 in cash,
and (b) requested that the Credit Agreement be amended to revise Section 10.2
thereof as set forth herein in connection therewith; and

     WHEREAS, Borrower and Banks desire to set forth herein the amount of the
Borrowing Base for the period commencing on November 1, 1999 and continuing
until the next succeeding Determination Date.

     NOW THEREFORE, for and in consideration of the mutual covenants and
agreements herein contained and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged and confessed,
Borrower, Administrative Agent and each Bank hereby agree as follows:

     SECTION 1.  Amendments.  In reliance on the representations, warranties,
     ---------   ----------
covenants and agreements contained in this First Amendment and subject to the
terms and conditions set forth herein, the Credit Agreement shall be amended
effective as of the date hereof in the manner provided in this Section 1.
                                                               ---------

     1.1. Amendment to Definition.  The definition of Loan Papers contained in
          -----------------------                     -----------
Section 2.1 of the Credit Agreement shall be amended to read in full as follows:

          Loan Papers means this Agreement, the First Amendment, the Notes, each
          -----------
     Restricted Subsidiary Guarantee now or hereafter executed, each Restricted
     Subsidiary Pledge Agreement now or hereafter executed, all Mortgages now or
     at any time hereafter delivered pursuant to Section 6.1, the Collateral
                                                 -----------
     Assignment, and all other certificates, documents or instruments delivered
     in connection with this Agreement, as the foregoing may be amended from
     time to time.

                                       1
<PAGE>

     1.2. Additional Definitions.  Section 2.1 of the Credit Agreement shall be
          ----------------------
amended to add the following definitions to such Section:

          First Amendment means the First Amendment to Second Amended and
          ---------------
     Restated Credit Agreement dated as of October 25, 1999, entered into by and
     among Borrower, Administrative Agent and Banks.

          Qualified Redemption means a one-time redemption by Borrower of
          --------------------
     623,000 shares of the Original Preferred Stock, of which (i) 166,000 shares
     are converted into 482,000 shares of Common Stock, and (ii) 457,000 shares
     are redeemed for $12,000,000 in cash, and which redemption shall (a) be
     pursuant to a Redemption Notice delivered by Borrower not more than ninety
     (90) days and not less than thirty (30) days prior to October 25, 1999, and
     (b) be effective October 25, 1999.

          Redemption Notice means a notice by Borrower to the holders of the
          -----------------
     Original Preferred Stock, pursuant to which Borrower calls 623,000 shares
     of such Original Preferred Stock for redemption.

     1.3. Amendment to Restricted Payments Covenant.  Section 10.2 of the
          -----------------------------------------
Credit Agreement shall be amended to read in full as follows:

          SECTION 10.2.   Restricted Payments.  Neither Borrower nor any
                          -------------------
          Restricted Subsidiary of Borrower will declare or make any Restricted
          Payment; provided, that, so long as no Default, Event of Default or
                   --------  ----
          Borrowing Base Deficiency then exists, and provided that no Default or
          Event of Default would result therefrom, Borrower shall be permitted
          to (a) declare and pay accrued dividends on the Preferred Stock and
          the Common Stock, (b) repurchase any of its Common Stock or Preferred
          Stock or warrants, options or other rights to acquire such Common
          Stock or Preferred Stock, so long as, at any date, the sum of (y) the
          aggregate amount of all such dividends declared and paid pursuant to
          clause (a) above during the period commencing on April 1, 1999 to and
          including such date, plus (z) the aggregate amount paid by Borrower
          and its Restricted Subsidiaries in respect of the repurchase of all
          such Common Stock or Preferred Stock or warrants, options or other
          rights to acquire such Common Stock or Preferred Stock pursuant to
          clause (b) above, shall not exceed the Restricted Payment Limit in
          effect at such date, and (c) notwithstanding anything to the contrary
          contained herein, consummate and effectuate the Qualified Redemption,
          which such Qualified Redemption shall not impact or be counted against
          the Restricted Payment Limit.

     SECTION 2.  Borrowing Base.  In accordance with Article V of the Credit
     ---------   --------------
Agreement, effective November 1, 1999, and continuing until the next
Determination Date, the Borrowing Base shall be $175,000,000.

     SECTION 3.  Consent.  Notwithstanding anything to the contrary contained in
     ---------   -------
the Credit Agreement or in any other Loan Paper, Banks hereby (a) consent to the
consummation of the Qualified Redemption, and (b) waive any inconsistent
provisions of the Credit Agreement,

                                       2
<PAGE>

including, without limitation, Section 10.2 thereof, with respect to the
consummation of such Qualified Redemption. The consent and waiver herein
contained are expressly limited as follows: (i) such consent and waiver are
limited solely to the consummation of the Qualified Redemption, (ii) such
consent and waiver shall not be applicable to any provision of any Loan Paper
other than Section 10.2 of the Credit Agreement, and (iii) such consent and
waiver are each a limited, one-time consent and waiver, and nothing contained
herein shall obligate Banks to grant any additional or future consent or waiver
of, or with respect to, Section 10.2 of the Credit Agreement or any other
provision of any Loan Paper.

     SECTION 4.  Representations and Warranties.  In order to induce
     ---------   ------------------------------
Administrative Agent and Banks to enter into this First Amendment, Borrower
hereby represents and warrants to Administrative Agent and each Bank that:

     4.1. Accuracy of Representations and Warranties.  Each representation and
          ------------------------------------------
warranty of Borrower and its Subsidiaries contained in the Loan Papers are true
and correct in all material respects as of the date hereof (except to the extent
that such representations and warranties are expressly made as of a particular
date, in which event such representations and warranties were true and correct
as of such date);

     4.2. Absence of Defaults.  Neither a Default nor an Event of Default has
          -------------------
occurred which is continuing; and

     4.3. No Defense.  Borrower has no defenses to payment, counterclaims or
          ----------
rights of set-off with respect to the Obligations on the date hereof.

     SECTION 5.  Miscellaneous.
     ---------   -------------

     5.1. Reaffirmation of Loan Papers; Extension of Liens.  Any and all of the
          ------------------------------------------------
terms and provisions of the Credit Agreement and the Loan Papers shall, except
as amended and modified hereby, remain in full force and effect.  Borrower
hereby extends the Liens securing the Obligations until the Obligations have
been paid in full, and agrees that the amendments and modifications herein
contained shall in no manner affect or impair the Obligations or the Liens
securing payment and performance thereof.

     5.2. Parties in Interest.  All of the terms and provisions of this First
          -------------------
Amendment shall bind and inure to the benefit of the parties hereto and their
respective successors and assigns.

     5.3. Counterparts.  This First Amendment may be executed in counterparts,
          ------------
and all parties need not execute the same counterpart; however, no party shall
be bound by this First Amendment until this First Amendment has been executed by
Borrower, Administrative Agent and all Banks at which time this First Amendment
shall be binding on, enforceable against and inure to the benefit of Borrower,
Administrative Agent and all Banks.  Facsimiles shall be effective as originals.

     5.4. COMPLETE AGREEMENT.  THIS FIRST AMENDMENT, THE CREDIT AGREEMENT AND
          ------------------
THE OTHER LOAN PAPERS REPRESENT THE FINAL AGREEMENT AMONG THE PARTIES AND MAY
NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,

                                       3
<PAGE>

CONTEMPORANEOUS OR ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL
AGREEMENTS BETWEEN THE PARTIES.

     5.5. Headings.  The headings, captions and arrangements used in this First
          --------
Amendment are, unless specified otherwise, for convenience only and shall not be
deemed to limit, amplify or modify the terms of this First Amendment, nor affect
the meaning thereof.

     5.6. Legal Expenses.  Borrower hereby agrees to pay on demand all
          --------------
reasonable fees and expenses of counsel to Administrative Agent incurred by
Administrative Agent in connection with the preparation, negotiation and
execution of this First Amendment and all related documents.

     IN WITNESS WHEREOF, the parties hereto have caused this First Amendment to
be duly executed by their respective Authorized Officers on the date and year
first above written.

                                 [Signature Pages Follow]

                                       4
<PAGE>

SIGNATURE PAGE TO FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT
AGREEMENT DATED AS OF NOVEMBER 1, 1999, BY AND AMONG PATINA OIL & GAS
CORPORATION, AS BORROWER, THE FINANCIAL INSTITUTIONS PARTIES THERETO, AS BANKS,
AND CHASE BANK OF TEXAS, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT


                                    PATINA OIL & GAS CORPORATION

                                    By: /s/ David J. Kornder
                                        --------------------------------------
                                        David J. Kornder, Vice President and
                                        Chief Financial Officer



                                    CHASE BANK OF TEXAS, NATIONAL
                                    ASSOCIATION, as Administrative Agent

                                    By: /s/ Dale S. Hurd
                                        --------------------------------------
                                        Dale S. Hurd, Managing Director



                                    CHASE BANK OF TEXAS, NATIONAL
                                    ASSOCIATION, as a Bank

                                    By: /s/ Dale S. Hurd
                                        --------------------------------------
                                        Dale S. Hurd, Managing Director


                                    BANK OF AMERICA, N.A., as a Bank

                                    By: /s/ J. Scott Fowler
                                        --------------------------------------
                                        J. Scott Fowler, Managing Director


                                    BANK ONE, NA
                                    (MAIN OFFICE - CHICAGO) as a Bank
                                    (FORMERLY KNOWN AS THE FIRST
                                    NATIONAL BANK OF CHICAGO)

                                    By: /s/ Carl Skoog
                                        --------------------------------------
                                         Carl Skoog, Vice President

                                       5
<PAGE>

SIGNATURE PAGE TO FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT
AGREEMENT DATED AS OF NOVEMBER 1, 1999, BY AND AMONG PATINA OIL & GAS
CORPORATION, AS BORROWER, THE FINANCIAL INSTITUTIONS PARTIES THERETO, AS BANKS,
AND CHASE BANK OF TEXAS, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT


                                    BANKERS TRUST COMPANY, as a Bank

                                    By: /s/ Calli S. Hayes
                                        --------------------------------------
                                        Calli S. Hayes, Managing Director



                                    CREDIT LYONNAIS NEW YORK BRANCH

                                    By: /s/ Phillipe Soustra
                                        --------------------------------------
                                        Phillipe Soustra, Senior Vice President



                                    FIRST UNION NATIONAL BANK

                                    By: /s/ Robert R. Wetteroff
                                        -------------------------------------
                                        Robert R. Wetteroff, Senior V.P.



                                    WELLS FARGO BANK, N.A.


                                    By: /s/ Greg Petruska
                                        -------------------------------------
                                        Greg Petruska, Vice President

                                       6

<PAGE>

                                                                  EXHIBIT 10.1.3


       SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT
       ----------------------------------------------------------------

     This Second Amendment to Second Amended and Restated Credit Agreement (this
Second Amendment) is executed as of the 16th day of December, 1999, by and among
- ----------------
Patina Oil & Gas Corporation, a Delaware Corporation (Borrower), Chase Bank of
                                                      --------
Texas, National Association, as Administrative Agent (Administrative Agent), and
                                                      --------------------
the financial institutions parties hereto as Banks (individually a Bank and
                                                                   ----
collectively Banks).
             -----

                              W I T N E S E T H:
                              - - - - - - - - -

     WHEREAS, Borrower, Administrative Agent and Banks are parties to that
certain Second Amended and Restated Credit Agreement dated as of July 15, 1999
(as amended, the Credit Agreement) (unless otherwise defined herein, all terms
                 ----------------
used herein with their initial letter capitalized shall have the meaning given
such terms in the Credit Agreement); and

     WHEREAS, pursuant to the Credit Agreement, Banks have made a revolving
credit loan to Borrower; and

     WHEREAS, Borrower has (a) notified Administrative Agent and Banks that
Borrower intends to redeem approximately 565,000 shares of its Original
Preferred Stock, and (b) requested that the Credit Agreement be amended to
revise (i) Section 10.2 thereof as set forth herein in connection therewith, and
(ii) the definition of Restricted Payment Limit as set forth herein.

     NOW THEREFORE, for and in consideration of the mutual covenants and
agreements herein contained and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged and confessed,
Borrower, Administrative Agent and each Bank hereby agree as follows:

     SECTION 1.  Amendments.  In reliance on the representations, warranties,
     ---------   ----------
covenants and agreements contained in this Second Amendment and subject to the
terms and conditions set forth herein, the Credit Agreement shall be amended
effective as of the date hereof in the manner provided in this Section 1.
                                                               ---------

     1.1.  Amendment to Definitions.  The definitions of Loan Papers and
           ------------------------                      -----------
Restricted Payment Limit contained in Section 2.1 of the Credit Agreement shall
- ------------------------
be amended to read in full as follows:

           Loan Papers means this Agreement, the First Amendment, the Second
           -----------
     Amendment, the Notes, each Restricted Subsidiary Guarantee now or hereafter
     executed, each Restricted Subsidiary Pledge Agreement now or hereafter
     executed, all Mortgages now or at any time hereafter delivered pursuant to
     Section 6.1, the Collateral Assignment, and all other certificates,
     -----------
     documents or instruments delivered in connection with this Agreement, as
     the foregoing may be amended from time to time.

                                      -1-
<PAGE>

          Restricted Payment Limit means as of any date (the measurement date)
          ------------------------                           ----------------
     on and after January 1, 2000, the sum of (i) $10,000,000, plus (ii) an
     amount equal to twenty percent (20%) of Borrower's Consolidated Free Cash
     Flow for the period commencing January 1, 2000 and ending on the last day
     of the Fiscal Quarter most recently ended as of the measurement date for
     which Borrower's consolidated financial statements required by Section
                                                                    -------
     9.1(b) (in the case of the first three quarters of each Fiscal Year, and
     ------
     Section 9.1(a) in the case of the fourth Fiscal Quarter of each Fiscal
     --------------
     Year) have been delivered to Banks.

     1.2. Additional Definitions.  Section 2.1 of the Credit Agreement shall be
          ----------------------
amended to add the following definitions to such Section:

          Second Amendment means the Second Amendment to Second Amended and
          ----------------
     Restated Credit Agreement dated as of December 16, 1999, entered into by
     and among Borrower, Administrative Agent and Banks.

          Second Qualified Redemption means a one-time redemption by Borrower of
          ---------------------------
     approximately 565,000 shares of the Original Preferred Stock, which
     redemption shall be pursuant to a Second Redemption Notice delivered by
     Borrower not more than ninety (90) days and not less than thirty (30) days
     prior to the fixed date for such redemption.

          Second Redemption Notice means a notice by Borrower to the holders of
          ------------------------
     the Original Preferred Stock, pursuant to which Borrower calls
     approximately 565,000 shares of such Original Preferred Stock for
     redemption.

     1.3. Amendment to Restricted Payments Covenant.  Section 10.2 of the
          -----------------------------------------
Credit Agreement shall be amended to read in full as follows:

          SECTION 10.2.  Restricted Payments.  Neither Borrower nor any
                         -------------------
          Restricted Subsidiary of Borrower will declare or make any Restricted
          Payment; provided, that, so long as no Default, Event of Default or
                   --------  ----
          Borrowing Base Deficiency then exists, and provided that no Default or
          Event of Default would result therefrom, Borrower shall be permitted
          to (a) declare and pay accrued dividends on the Preferred Stock and
          the Common Stock, (b) repurchase any of its Common Stock or Preferred
          Stock or warrants, options or other rights to acquire such Common
          Stock or Preferred Stock, so long as, at any date, the sum of (y) the
          aggregate amount of all such dividends declared and paid pursuant to
          clause (a) above during the period commencing on January 1, 2000 to
          and including such date, plus (z) the aggregate amount paid by
          Borrower and its Restricted Subsidiaries in respect of the repurchase
          of all such Common Stock or Preferred Stock or warrants, options or
          other rights to acquire such Common Stock or Preferred Stock pursuant
          to clause (b) above during the period commencing on January 1, 2000 to
          and including such date, shall not exceed the Restricted Payment Limit
          in effect at such date, and (c) notwithstanding anything to the
          contrary contained herein, consummate and effectuate the Qualified
          Redemption and the Second Qualified Redemption, and neither the
          Qualified Redemption nor the Second Qualified Redemption shall  impact
          or be counted against the Restricted Payment Limit.

                                      -2-
<PAGE>

     SECTION 2.  Consent.  Notwithstanding anything to the contrary contained in
     ---------   -------
the Credit Agreement or in any other Loan Paper, Banks hereby (a) consent to the
consummation of the Second Qualified Redemption, and (b) waive any inconsistent
provisions of the Credit Agreement, including, without limitation, Section 10.2
thereof, with respect to the consummation of such Second Qualified Redemption.
The consent and waiver herein contained are expressly limited as follows: (i)
such consent and waiver are limited solely to the consummation of the Second
Qualified Redemption, (ii) such consent and waiver shall not be applicable to
any provision of any Loan Paper other than Section 10.2 of the Credit Agreement,
and (iii) such consent and waiver are each a limited, one-time consent and
waiver, and nothing contained herein shall obligate Banks to grant any
additional or future consent or waiver of, or with respect to, Section 10.2 of
the Credit Agreement or any other provision of any Loan Paper.

     SECTION 3.  Representations and Warranties.  In order to induce
     ---------   ------------------------------
Administrative Agent and Banks to enter into this Second Amendment, Borrower
hereby represents and warrants to Administrative Agent and each Bank that:

     3.1.  Accuracy of Representations and Warranties.  Each representation and
           ------------------------------------------
warranty of Borrower and its Subsidiaries contained in the Loan Papers are true
and correct in all material respects as of the date hereof (except to the extent
that such representations and warranties are expressly made as of a particular
date, in which event such representations and warranties were true and correct
as of such date);

     3.2.  Absence of Defaults.  Neither a Default nor an Event of Default has
           -------------------
occurred which is continuing; and

     3.3.  No Defense.  Borrower has no defenses to payment, counterclaims or
           ----------
rights of set-off with respect to the Obligations on the date hereof.

     SECTION 4.  Miscellaneous.
     ---------   -------------

     4.1.  Reaffirmation of Loan Papers; Extension of Liens.  Any and all of the
           ------------------------------------------------
terms and provisions of the Credit Agreement and the Loan Papers shall, except
as amended and modified hereby, remain in full force and effect.  Borrower
hereby extends the Liens securing the Obligations until the Obligations have
been paid in full, and agrees that the amendments and modifications herein
contained shall in no manner affect or impair the Obligations or the Liens
securing payment and performance thereof.

     4.2.  Parties in Interest.  All of the terms and provisions of this Second
           -------------------
Amendment shall bind and inure to the benefit of the parties hereto and their
respective successors and assigns.

     4.3.  Counterparts.  This Second Amendment may be executed in counterparts,
           ------------
and all parties need not execute the same counterpart; however, no party shall
be bound by this Second Amendment until this Second Amendment has been executed
by Borrower, Administrative Agent and Required Banks at which time this Second
Amendment shall be binding on, enforceable against and inure to the benefit of
Borrower, Administrative Agent and all Banks.  Facsimiles shall be effective as
originals.

                                      -3-
<PAGE>

     4.4.  COMPLETE AGREEMENT.  THIS SECOND AMENDMENT, THE CREDIT AGREEMENT AND
           ------------------
THE OTHER LOAN PAPERS REPRESENT THE FINAL AGREEMENT AMONG THE PARTIES AND MAY
NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR ORAL AGREEMENTS OF
THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

     4.5.  Headings.  The headings, captions and arrangements used in this
           --------
Second Amendment are, unless specified otherwise, for convenience only and shall
not be deemed to limit, amplify or modify the terms of this Second Amendment,
nor affect the meaning thereof.

     4.6.  Legal Expenses.  Borrower hereby agrees to pay on demand all
           --------------
reasonable fees and expenses of counsel to Administrative Agent incurred by
Administrative Agent in connection with the preparation, negotiation and
execution of this Second Amendment and all related documents.

     IN WITNESS WHEREOF, the parties hereto have caused this Second Amendment to
be duly executed by their respective Authorized Officers on the date and year
first above written.

                           [Signature Pages Follow]

                                      -4-
<PAGE>

SIGNATURE PAGE  TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT
AGREEMENT DATED AS OF DECEMBER 16, 1999, BY AND AMONG PATINA OIL & GAS
CORPORATION, AS BORROWER, THE FINANCIAL INSTITUTIONS PARTIES THERETO, AS BANKS,
AND CHASE BANK OF TEXAS, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT


                                    PATINA OIL & GAS CORPORATION

                                    By:  /s/ David J. Kornder
                                         -------------------------------------
                                         David J. Kornder, Vice President and
                                         Chief Financial Officer


                                    CHASE BANK OF TEXAS, NATIONAL
                                    ASSOCIATION, as Administrative Agent

                                    By:  /s/ Robert C. Mertensotto
                                         -------------------------------------
                                         Robert C. Mertensotto,
                                         Managing Director



                                    CHASE BANK OF TEXAS, NATIONAL
                                    ASSOCIATION, as a Bank

                                    By:  /s/ Robert C. Mertensotto
                                         -------------------------------------
                                         Robert C. Mertensotto,
                                         Managing Director


                                    BANK OF AMERICA, N.A., as a Bank

                                    By:  /s/ J. Scott Fowler
                                         -------------------------------------
                                         J. Scott Fowler, Managing Director


                                    BANK ONE, NA
                                    (MAIN OFFICE - CHICAGO) as a Bank
                                    (FORMERLY KNOWN AS THE FIRST
                                    NATIONAL BANK OF CHICAGO)

                                    By:  /s/ Tim Merrell
                                         -------------------------------------
                                         Tim Merrell, Vice President

                                      -5-
<PAGE>

SIGNATURE PAGE  TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT
AGREEMENT DATED AS OF DECEMBER 16, 1999, BY AND AMONG PATINA OIL & GAS
CORPORATION, AS BORROWER, THE FINANCIAL INSTITUTIONS PARTIES THERETO, AS BANKS,
AND CHASE BANK OF TEXAS, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT


                                    BANKERS TRUST COMPANY, as a Bank

                                    By:  /s/ Marcus M. Tarkington
                                         ---------------------------------------
                                         Marcus M. Tarkington, Principal



                                    CREDIT LYONNAIS NEW YORK BRANCH

                                    By:  /s/ Phillipe Soustra
                                         ---------------------------------------
                                         Phillipe Soustra, Senior Vice President



                                    FIRST UNION NATIONAL BANK

                                    By:  /s/ Robert R. Wetteroff
                                         ---------------------------------------
                                         Robert R. Wetteroff, Senior V.P.



                                    WELLS FARGO BANK, N.A.

                                    By:  /s/ Greg Petruska
                                         ---------------------------------------
                                         Greg Petruska, Vice President

                                      -6-

<PAGE>

                                                                      EXHIBIT 11

                      COMPUTATION OF NET INCOME PER SHARE
             FOR THE YEARS ENDED DECEMBER 31, 1997, 1998 AND 1999
                    (dollars in thousands, except ratio's)

<TABLE>
<CAPTION>
                                          1997       1998       1999
                                        --------   --------   --------
<S>                                     <C>        <C>        <C>
Basic net income (loss) per share:


Net income (loss)                       $(16,903)  $ (4,524)  $ 14,959
Dividends on preferred stock              (3,346)    (6,335)    (6,739)
                                        --------   --------   --------

  Net income (loss) available common    $(20,249)  $(10,859)  $  8,220

Weighted average shares outstanding       18,324     16,025     15,972

  Net income (loss) per share           $  (1.11)  $  (0.68)  $   0.52
                                        ========   ========   ========

Diluted net income (loss) per share:

Net income (loss)                       $(16,903)  $ (4,524)  $ 14,959
Dividends on preferred stock              (3,346)    (6,335)    (6,739)
                                        --------   --------   --------

  Net income (loss) available common    $(20,249)  $(10,859)  $  8,220

Weighted average shares outstanding       18,324     16,025     16,471

  Net income (loss) per share           $  (1.11)  $  (0.68)  $   0.50
                                        ========   ========   ========
</TABLE>

Note: The common stock options, common stock grants, $12.50 common stock
warrants, 7.125% convertible preferred stock and 8.50% convertible preferred
stock were anti-dilutive for 1997 and 1998, and the $12.50 common stock
warrants, 7.125% convertible preferred stock and 8.50% convertible preferred
stock were anti-dilutive for 1999.

<PAGE>

                                                                      EXHIBIT 12

                      COMPUTATION OF RATIO OF EARNINGS TO
                COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS
                                  (UNAUDITED)
                    (dollars in thousands, except ratio's)

<TABLE>
<CAPTION>
                                           1995      1996      1997       1998      1999
                                         --------  --------  --------   --------  --------
<S>                                      <C>       <C>       <C>        <C>       <C>
Net income (loss) before taxes           $ (3,222) $ 3,168   $ (16,903) $ (4,524) $ 14,959
Interest expense                            5,409   14,275      15,939    12,867    10,622
                                         --------  --------  ---------  --------  --------

  Earning before fixed charges           $  2,187  $ 17,443  $    (964)    8,343     25,581
                                         ========  ========  =========  ========  ========

Preferred dividends                      $      -  $  2,129  $   3,346     6,335     6,739
Ratio of pretax income to net income         1.54      0.89       1.00      1.00      1.00
                                         --------  --------  ---------  --------  --------

  Preferred dividend factor              $      -  $  1,895  $   3,346  $  6,335  $  6,739
                                         ========  ========  =========  ========  ========

Fixed charges:
Interest expense                         $  5,409  $ 14,275  $  15,939  $ 12,867  $ 10,622
Preferred dividend factor                       -     1,895      3,346     6,335     6,739
                                         --------  --------  ---------  --------  --------

  Total fixed charges and preferred
    dividends                            $  5,409  $ 16,170  $  19,285  $ 19,202  $ 17,361
                                         ========  ========  =========  ========  ========

  Ratio of earnings to combined fixed
    charges and preferred dividends          0.40      1.08      (0.05)     0.43      1.47
                                         ========  ========  =========  ========  ========
</TABLE>

<PAGE>

                                                                      EXHIBIT 23


                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
                   -----------------------------------------


As independent public accountants, we hereby consent to the incorporation by
reference of our report included in this Form 10-K, into Patina Oil & Gas
Corporation's previously filed Registration Statements on Form S-3, File Nos.
333-77785, 333-89399 and on Form S-4, File No.  333-78291.



Denver, Colorado
February 23, 2000

<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                             626
<SECURITIES>                                         0
<RECEIVABLES>                                   16,128
<ALLOWANCES>                                     (434)
<INVENTORY>                                      2,680
<CURRENT-ASSETS>                                19,350
<PP&E>                                         625,557
<DEPRECIATION>                               (315,983)
<TOTAL-ASSETS>                                 330,216
<CURRENT-LIABILITIES>                           19,108
<BONDS>                                        132,000
                                0
                                         24
<COMMON>                                           161
<OTHER-SE>                                     165,705
<TOTAL-LIABILITY-AND-EQUITY>                   330,216
<SALES>                                         90,407
<TOTAL-REVENUES>                                91,571
<CGS>                                           52,646
<TOTAL-COSTS>                                   65,102
<OTHER-EXPENSES>                                   887
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              10,623
<INCOME-PRETAX>                                 14,959
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                             14,959
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    14,959
<EPS-BASIC>                                       0.52
<EPS-DILUTED>                                     0.50


</TABLE>


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